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Logic is a skill in The Sims series. It is a valuable skill for many careers and playing games like chess.

Ways to increase logic

• Play with a peg toybox (toddlers only)
• Play chess
• Play checkers^[TS:MM]
• Play dominoes^[TS3:ST]
• Use The "Concoctanation Station" chemistry set ^[TS:LL] or the Catalyst Chemistry Set^[TS3:G]
• Gaze through the telescope^{[TS:LL][TS2][TS3][TS4]} or Backyard Observatory^[TS4]
• Use the SimSanto Inc. Biotech Station career reward from the Science track.^[TS2]
• Do the crossword in the newspaper.^[TS2]
• Use the Cerebralizing Brain Enhancing Machine.^[TS3:UL]
• Use the microscope.^[TS4]
• Studying logic from Books First for Learning: A Bookshelf of Education.^[TS2:S]
• Reading a logic skill book.^[TS3][TS4]

Careers which require the logic skill

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• Architecture^[TS2:FT]
• Astronomer (Astrophysicist branch)^[TS3:ITF]
• Business^[TS2][TS4]
• Criminal (Evil branch)^[TS3]
• Culinary^[TS2]
• Education^{[TS2:S][TS3:A]}
• Fortune teller (Scam Artist branch)^[TS3:SN]
• Gamer^[TS2:S]
• Game development^[TS2:LS]
• Ghost hunter^[TS2:A]
• Intelligence^[TS2:FT]
• Investigator^[TS2:A]
• Law^{[TS2:S][TS4:DU]}
• Law enforcement^[TS2][TS3]
• Medicine^[TS2][TS3]
• Music (Symphonic branch)^[TS3]
• Natural scientist^[TS2:U]
• Politics^[TS2]
• Secret agent^[TS4]
• Science^[TS2]
• Show business^[TS2:U]
• Video game developer^[TS3:UL]
• Writer (Author branch)^[TS4]

The Sims

In The Sims: Makin' Magic, it improves spell casting, affects how many MagiCoins a Sim will get for performing on the stone stage or at the tricks tables in Magic Town, and may affect the performance of other magical acts.

The Sims 2

In The Sims 2, logic also affects the odds of winning a chess game. With The Sims 2: University, teenagers with a high logic skill (level 8 or higher) qualify for the Will Wright Genius Grant, which is a §750 scholarship. Logic increases the rate at which a Sim earns the Register talent badge from The Sims 2: Open for Business. With The Sims 2: FreeTime, having high logic makes it easier for Sims to maintain high enthusiasm for the games and science hobbies. Additionally, all Sims in The Sims 2 who have 10 points in logic get a 35% boost when learning other skills, except for body and charisma.

The Sims 3

In The Sims 3, logic is augmented by the computer whiz, genius, and perceptive^[TS3:A] traits. With a higher logic skill, Sims can look through the telescope in many different ways. Sims are able to use the Catalyst Chemistry Lab Station to make potions.^[TS3:G]

When you achieved Level 10, you will get a certificate:

"With mental skills like yours it is only logical that we, the Pollak Institute for Esoteric but Correct Thinking congratulate you, for achieving the very highest level of excellence in your mental endeavors. Please accept this handsomely framed certificate and display it with pride knowing others will see just how skilled you are"

Statistics

• Chess Rank
• Highest Ranked Opponent Defeated in Chess
• Chess Record
• Number Of Celestial Discoveries
• Number of Sims Tutored
• Number of Hours Spent Tutoring Children
• Number of Hours Spent Tutoring Sims for Skills
• Number of Potions Made^[TS3:G]
• Potions Discovered^[TS3:G]
• Dominoes Record^[TS3:ST]

Challenges

Skill challenges related to logic:

• Grand Master: Chess Grand Masters have reached the coveted fifth level of the competitive chess circuit. There, they sit upon their throne, gazing downwards upon their victims. Those who engage Grand Masters in chess improve their abilities in logic and chess more quickly.
• Celestial Explorer: Celestial Explorers have discovered 20 celestial bodies through their telescope. Their extensive knowledge of the heavens allows them to discuss the stars with their friends and neighbors.
• Teacher Extraordinaire: Teacher Extraordinaires have spent at least 20 hours tutoring children and students. Because of this, they are much more effective when tutoring others.
• Skill Professor: Skill Professors have spent at least 30 hours tutoring other Sims in skills. Because of this, they are much more effective when teaching skills to others.
• Master Chemist:^[TS3:G] Master Chemists have discovered 10 potions. After learning every possible potion, they can create potions at a lower cost!

Abilities

Increasing a Sim's logic skill gives the Sim certain special interactions:

Celestial bodies

When using a telescope and searching the galaxy, a Sim will sometimes discover a celestial body. It may be a comet, planet, star, moon, galaxy, black hole, neutron or satellite. The Sim will then earn a small amount of money or up to several thousand (for discovering a black hole) for contributing to the scientific community.

With The Sims 3: Into the Future, Sims can use the Stellar Observatory to search for stellar activity. Like telescopes, Sims can also discover celestial bodies during this interaction. Sims who are in the astrophysicist branch of the astronomer career can discover unique celestial bodies, and for every celestial body they discover, they can earn a painting of that body. These paintings can have a value from hundreds to thousands of simoleons depending on the importance of that discovery. The unique bodies are an asteroid belt, constellation, event horizon, gamma ray burst, life on another planet, nebula, shooting star, super nova, and the end of universe. The game screen can flash for a second after discovering a super nova.

Also, Sims may see a meteor fall from the sky and land somewhere in town. They can use Map View to find the land site and travel there to collect the space rock. There is also a chance that the meteor will fall on them.

Celestial Body		Reward [§]	Notes	Object[n 1]
	Asteroid Belt	§70-§80	From Stellar Observatory with a 9% chance.
	Black Hole	§10,000	From Telescope with a 0.1% chance[n 2] or Stellar Observatory with a 6% chance[n 3].
	Comet	§300-§500	From Telescope with a 3% chance[n 2] or Stellar Observatory with a 6% chance[n 3].
	Constellation	§70-§80	From Stellar Observatory with a 6% chance[n 3].
	Event Horizon	§70-§80	From Stellar Observatory with a 7% chance[n 3]. Requires level 8 of the Astrophysicist branch of Astronomer career.
	Galaxy	§500-§1,500	From Telescope with a 1% chance[n 2] or Stellar Observatory with a 8% chance[n 3].
	Gamma Ray	§70-§80	From Stellar Observatory with a 9% chance[n 3]. Requires level 6 of the Astrophysicist branch of Astronomer career.
	Life on Another Planet	§70-§80	From Stellar Observatory with a 8% chance[n 3]. Requires level 9 of the Astrophysicist branch of Astronomer career.
	Moon	§250-§450	From Telescope with a 4% chance[n 2] or Stellar Observatory with a 5% chance[n 3].
	Nebula	§70-§80	From Stellar Observatory with a 7% chance[n 3].
	Planet	§150-§350	From Telescope with a 6.9% chance[n 2] or Stellar Observatory with a 5% chance[n 3].
	Satellite	§25-§75	From Telescope with a 10% chance[n 2] or Stellar Observatory with a 5% chance[n 3].
	Shooting Star	§70-§80	From Stellar Observatory with a 8% chance[n 3].
	Star	§70-§80	From Telescope with a 75% chance[n 2] or Stellar Observatory with a 5% chance[n 3]. Star types: Dwarf, SubGiant, Giant, SuperGiant, Neutron, Pulsar Star sizes: Tiny, Small, Medium, Large, Huge, Ginormus Star colours: Blue, White, Yellow, Orange, Red
	Super Nova	§70-§80	From Stellar Observatory with a 6% chance[n 3]. Requires level 7 of the Astrophysicist branch of Astronomer career. Screen will flash first before discovery.
	The End of Universe	§70-§80	From Stellar Observatory with a 50% chance[n 3]. Requires level 10 of the Astrophysicist branch of Astronomer career. This seems to be only found once per sim.

Notes

Opportunities

Opportunities related to logic:

Skill improvement

Becoming More Logical
Requirements	Availability	Rewards	Timeout
Logic skill level 2-8 Science lab rabbit hole	Repeatable Received from phone (5)	§750	N/A
Gain a level in Logic skill and visit the science lab between 7 AM and 5 PM.
The Science Facility thinks you can reach the top of the logical peak, but only if you really put your mind to it. Improve your Logic Skill by one point at the behest of the scientists and they'll sponsor you. Sponsorship equals money, by the way.

Visiting rabbit hole

The Great Argyle Sinclair
Requirements	Availability	Rewards	Timeout
Logic skill level 1-5 Bookstore rabbit hole	Repeatable Received from phone (5)	+5% Logic skill	N/A
"Watch Argyle Sinclair" at the bookstore between 12 PM and 4 PM (16:00).
The phenomenally gifted chess champion Argyle Sinclair will be holding an exhibition match against some locals at the Bookstore in the near future. You should attend the event and watch – you just might learn a thing or two!
Notes: Completion notification: "Argyle Sinclair was simply marvelous, a testament to humanity's power over machines and non-sentient creatures! You watched him defeat his opponent in only two moves, something not seen since… well, ever! Your logic skills improved simply by watching the exhibition!"

Riddle Away
Requirements	Availability	Rewards	Timeout
Logic skill level 2-10 Bookstore rabbit hole	Repeatable Received from phone (5)	Winning §1,500 +10% Logic skill Losing +15% Logic skill	3 days
"Compete in Contest" at the bookstore between 12 PM and 5 PM.
The Bookstore is trying to encourage interest and sales for their puzzle book section by holding a Riddle-A-Thon. All locals with a strong, logically fueled mind and a desire to win cash prizes should enter! Hone your Logic Skill and visit the Bookstore to compete before the contest ends.
Notes: The base chance of winning the opportunity is 25%, modified by up to +40% at level 10 Logic skill and +15% at maximum mood.

Puzzle Panic
Requirements	Availability	Rewards	Timeout
Logic skill level 3-7 Grocery rabbit hole	Once per Sim Received from phone (10)	§400	N/A
"Assemble Puzzles" at the grocery between 7 AM and 10 PM.
Chaos has struck at the Supermarket! While unloading a new shipment of goods, an errant forklift ran over one pallet containing thousands of puzzle pieces! The Supermarket needs someone with a sharp mind to piece the puzzles together so that they can put them back into boxes and put them on store shelves. Visit the Supermarket and lend a hand!

Fixing the Books
Requirements	Availability	Rewards	Timeout
Logic skill level 3-8 Office building rabbit hole	Once per Sim Received from phone (10)	§750	N/A
"Assist Accountants" at the office building between 7 AM and 5 PM.
The accountants at the Business Office are a tad stumped with their balance sheets. Tax season is fast approaching and the line between assets, costs, debits, and credits is blurry and confusing. Assist the accountants at the Business Office with their taxes and you'll be paid.

A Stimulating Experiment
Requirements	Availability	Rewards	Timeout
Logic skill level 4-10 Science lab rabbit hole	Repeatable Received from phone (5)	§600	5 days
"Participate in Study" at the science lab between 12 PM and 6 PM on weekdays.
The Science Facility is holding an experiment to see how Sims of different brain power react to different stimuli. Naturally, you've been asked to participate. Visit the Science Facility before too long to be poked, prodded, and "gently" shocked to earn some money.

Logic 101
Requirements	Availability	Rewards	Timeout
Logic skill level 5-10 School rabbit hole	Once per Sim Received from phone (10)	§600	N/A
"Teach Logic Class" at the school between 10 AM and 2 PM on weekdays.
The School had to scale back on costs and cut back on the full time Logic staff. Fortunately, they have enough money set aside to pay for guest lecturers. You've been invited to speak at the School about the importance of a good foundation in Logic. You'll be well paid for your time.

Taking Down Sinclair
Requirements	Availability	Rewards	Timeout
Logic skill level 10 Theater rabbit hole	Repeatable Received from phone (5)	§2,500	2 days
"Challenge Argyle Sinclair" at the theater.
Argyle Sinclair has heard much about your deeds as a logical being and challenges you to a chess match at the Theatre. If you feel bold enough to show up in time, you will find a chess opponent who is as cruel as he is brilliant. Good luck!

Tutoring

Tutor Me Please
Requirements	Availability	Rewards	Timeout
Logic skill level 5-10 Have a child or teen acquaintance or higher	Once per Sim Received from phone (10)	§250 +30 Relationship with target	N/A
Tutor the target Sim.
(Sim name) has heard you possess quite the logical mind and wouldn't mind if you dropped by to pass on some of that knowledge. Tutor (Sim name) and your relationship will improve, plus you'll be paid!

Logic Tutoring
Requirements	Availability	Rewards	Timeout
Logic skill level 10 Office building rabbit hole A tutorable non-household Sim working in Business career	Repeatable Received from phone (5)	§2,000	N/A
Tutor the target Sim in a skill and visit the office building.
The managers at (Office building name) would like you to come in to help train (Sim name), help analyze their current practices, and provide advice on where to take the business in the future. The economy is in the midst of what other analysts are calling "trying times," so any logic you can provide will earn you big bucks.

Miscellaneous

Settle an Argument
Requirements	Availability	Rewards	Timeout
Logic skill level 3-9	Once per Sim Received from phone (10)	+10% Logic skill +20 Relationship with target	N/A
"Convince Logic is Great" to the target Sim.
(Sim name) is a bit soured on logical thinking because it can make people a tad boring and... logical. Have a chat with (Sim name) and provide a convincing argument about the greatness of logical thought. If you do well, you might even be able to increase your relationship with (Sim name)!

Riddle War in China
Requirements	Availability	Rewards	Timeout
Logic skill level 3-10	Once per Sim Received from phone (10)	+10% Logic skill §500	N/A
Travel to Shang Simla, "Solve Riddle" to 3 different Sims, and report back to the theater.
A hobby group has started up at the Theater with Sims practicing for a riddle contest. It's a battle to see who can untangle the web of logic within the riddle. The group has heard of your Logic prowess and they want to send you to China to face the best local riddle-writers. It will build Logic Skill and earn you some cash.

A French Puzzler
Requirements	Availability	Rewards	Timeout
Logic skill level 3-10 Have an acquaintance or higher	Once per Sim Received from phone (10) Homeworld only	+10% Logic skill §500	N/A
Travel to Champs Les Sims, "Ask About Puzzle" to the target Sim, and report back to the target Sim.
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Senet Strategy
Requirements	Availability	Rewards	Timeout
Logic skill 3-10 Military base rabbit hole	Once per Sim Received from phone (10)	+10% Logic skill §500	N/A
Travel to Al Simhara, "Learn Senet" from the target Sim, and report back to the military base.
The military has long explored tactical games as a training method. They would like to send you to Egypt to learn the game of Senet from a local and report back on its potential as a training tool. You will earn some cash if you undertake the trip.

Fixing the Celestial Slump
Requirements	Availability	Rewards	Timeout
Logic skill level 5-10 Science lab rabbit hole	Once per Sim Received from phone (10)	§500 +10% Logic skill	N/A
Search galaxy on a telescope and visit the science lab.
The Science Facility has hit a bit of a slump and they haven't discovered any celestial bodies in quite some time. They need to discover something soon if they want to keep their grants, so they've asked local geniuses to do some backyard astronomy. Search the galaxy using your own telescope at home, and you'll be well paid for your efforts.

Wishes

Wishes related to logic:

Icon	Name	Lifetime Happiness	Description	Trigger	EP
	Learn Logic Skill	500	Your Sim seeks to learn something new to enrich and enlighten. Have your Sim refine a talent to perhaps pick up a new skill!		&BG
	Take a Class in the Logic Skill	500	Classes are a quick way to learn new skills, though at the cost of a few Simoleons. Your Sim wants to take a skill class, so visit the different buildings in town to find the right class.		&BG
	Read a Book About Logic Skill	500	Learning new things opens the doorway for a variety of activities. Your Sim dreams of learning more about a skill. Send your Sim to the bookstore to buy a book on the topic!		&BG
	Improve Logic Skill	Varies	Learning is an exciting pursuit many Sims enjoy. Your Sim wants to improve a skill so they can do more things with the knowledge! Practice the skill until your Sim gains a level.		&BG
	Use a Telescope	150	The night sky is beautiful and mysterious. Your Sim wants to explore the logical patterns of the stars.		&BG
	Discover a Star	300	Enterprising astronomers can eventually discover stars and other celestial bodies by Searching the Galaxy on telescope. Your Sim wants to discover a star!		&BG
	Play Chess	150	Chess is a match of wits and cunning that often concludes without bloodshed. Your Sim wants to practice or play chess with someone.		&BG
	Win a Ranked Chess Match	500	Your Sim hopes to reign supreme on the highly dangerous Ranked Chess Circuit. Use the phone to invite over your next opponent.		&BG
	Master the Logic Skill	5,000	Mastering a Skill takes a great patience and dedication, but your Sim aspires to be the best. Have your Sim practice the skill and complete Opportunities, and great things will happen.		&BG
	Tutor Someone in a Skill	300	Tutoring is a great way to teach others about a topic quickly. Your Sim wants to tutor someone in a skill such as cooking or fishing.		&BG
	Discover a Potion	150	The act of scientific discovery is a thrilling journey into the realm of undiscovered knowledge, Your Sim wants to Discover a Potion using the Catalyst Chemistry Lab Station. Eureka!		&EP04
	Make a [potion name] Potion	Varies	Experimenting with potions is an adventure of discovery into the wonders of science. Your Sim wants to Make a [potion name] Potion on the Catalyst Chemistry Lab Station.		&EP04
	Discover All Potions	5,000	Setting a lofty goal fuels ambition and can lead to great achievements! Your Sim wants to streatch his/her scientific knowledge and Discover every Potion on the Catalyst Chemistry Lab Station.		&EP04
	Search for Stellar Activity	250	The cosmos is so huge that there are always new phenomena to find. Your Sim wants to make a discovery of their own!		&EP11

Trivia

• When moving to another neighborhood, Sims must rediscover all the potions. However, because each discovery adds 10% to the discovery rate without resetting it, a Sim that had completed the Master Chemist challenge previously will not be able to complete the challenge ever, and when the Sim discovers 10 potions throughout the Sim's cumulative history, the challenge is marked as completed. However, the Sim does have another opportunity to discover each potion for free once.
• When a Sim masters the logic skill, the game mentions Veronaville on the pop-up message saying, "Such brilliance and mental fortitude have not been witnessed since the Late Renaissance of Veronaville!"
• To complete the Teacher Extraordinaire simply select "Friendly" then "Tutor" not "Tutor in..."
• If The Sims 3: Showtime is installed, children and teenagers raising Logic often trigger the Master Magician Lifetime Wish, despite the career not requiring the skill.

The Sims 4

In The Sims 4 is augmented by the genius trait, as it will occasionally give a focused moodlet, with focused being the ideal emotion for building logic skill. Gaining logic skill is required for the Nerd Brain aspiration and also for some careers.

Benefits

Similarly to the previous games, Sims with higher logic skill increase their chances of winning at games like chess. Logic skill is also tied to collecting, with benefits relating to this including the ability to collect and analyze plant, crystal and fossil samples at levels 2, 5 and 8 respectively. Also, Sims can unlock several Logic based interactions: 'Discuss Logic', 'Provide Logical Solution to Problems' and 'Rant Logically'.

Sims proficient in this skill

• Alice - Level 9
• Jacques Villareal - Level 9
• Lily Feng - Level 9
• Serena Bhamra - Level 8
• Simeon Silversweater - Level 8
• Care Ren - Level 7
• Erwin Pries - Level 7
• Ignacio Robles - Level 7
• Olive Specter - Level 7
• Cecilia Kang - Level 6
• Kai Aether - Level 6
• Minerva Charm - Level 6
• Rita Coombes - Level 6
• Victor Feng - Level 6
• Bernice Robles - Level 5
• Bess Sterling - Level 5
• Bjorn Bjergsen - Level 5
• Jay Robles - Level 5
• Julia Wright - Level 5
• Kristopher Volkov - Level 5
• Leslie Holland - Level 5
• Mei Prescott - Level 5
• Molly Prescott - Level 5
• Ollie Mark - Level 5
• Sachiko Nishidake - Level 5
• Thi Linh - Level 5

This section is in need of additional information. You can help The Sims Wiki by expanding this section.