SKU: 35553183539

The Great Mental Models: General Thinking Concepts

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The Great Mental Models: General Thinking ConceptsBy: Shane Parrish, Rhiannon Beaubien A cult bestseller in the US, available around the world for the first time, The Great Mental Models introduces the simple tools we all need to see the world clearly. Time and time again, great thinkers like Warren Buffett and Charlie Munger have credited their success to mental models: simple representations of how the world works that can be applied in a wide array of contexts. Mastering a small number of these

By: Shane Parrish, Rhiannon Beaubien     

A cult bestseller in the US, available around the world for the first time, The Great Mental Models introduces the simple tools we all need to see the world clearly.

Time and time again, great thinkers like Warren Buffett and Charlie Munger have credited their success to mental models: simple representations of how the world works that can be applied in a wide array of contexts. Mastering a small number of these concepts enables you to rapidly grasp new information, identify patterns others don’t, and better anticipate outcomes.

The Great Mental Models introduces the most powerful models that anyone can use right away to improve decision making and productivity. In this volume, Shane Parrish introduces the universal concepts that underpin better thinking, including:

  • Occam’s Razor: When faced with competing hypotheses, the simplest explanation is often the best one.
  • Circle of competence: We operate optimally in the territory we know best and the quality of our thinking decreases as we venture too far outside our areas of expertise.
  • Inversion: To invert a problem is to think about it in reverse, and thereby work out what not to do in response.


Building a latticework of mental models is one of the most powerful things you can do to become a better thinker, leader, or creator. The Great Mental Models is the accessible guide you need to unlock this ability.

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SKU: 35553183539

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Brad
Carnegie, US
★★★★★ 5
Really are indestructible. Amazing product.
Color: Blue+Red
Wow! Really indestructible. Our large dogs have destroyed other “indestructible” toys in less than an hour and these are amazing. They squeak, which our dogs love (we hate) and they float when they go into our pool. IF they ever do wear out or are lost I will definitely buy again.
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Reviewed in the United States on June 3, 2026
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Kelsey
West Palm Beach, US
★★★★★ 5
Durable squeaky ball for chewers
Color: Blue+Red, Color: Blue+Red
These are great! My 54 lb GSP loves them and it’s the only thing she cannot destroy! She’s currently 1 year and we have had the balls for several months. We have this brand and similar ones too. They float, bounce, and squeak. The ridges are good for chewing.
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Reviewed in the United States on May 4, 2026
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Stephanie Dutey
Boise, US
★★★★★ 5
Finally a Toy My Pitbull Hasn’t Destroyed in 5 Minutes
Color: Blue+Red, Color: Blue+Red
I have a 65 lb pitbull who destroys most toys almost immediately, so I’m always skeptical when products claim to be “indestructible.” Most toys last maybe a few minutes in my house before pieces are everywhere. These have actually held up surprisingly well. The material feels durable and thick enough to handle really aggressive chewing, and so far my dog hasn’t been able to destroy them like he does with most other balls and squeaky toys. That alone makes these worth it to me. I also really like the size. They’re large enough that I don’t have to constantly worry about him accidentally swallowing them or choking while playing, which is a huge plus for bigger dogs. The squeaker inside also keeps him interested longer since he usually gets bored quickly with toys that don’t make noise or bounce around well. If you have a strong chewer or larger dog and you’re tired of replacing destroyed toys constantly, these are definitely worth trying.
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Reviewed in the United States on May 10, 2026
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Ray Ray
Whiting, US
★★★★★ 5
Excellent choice
I will skeptical when buying these because I have a pitbull bulldog that likes to chew holes in every toy. This is her favorite she choose on the ball, but she doesn’t actually ruin it because she can’t. It holds up one of the squeakers broke, but that’s expected I guess my wife actually ordered more. I’m not sure if it was from the same seller or not but those ones they don’t favor as much for some reason I seen the same different colors. My dog even sleeps with it sometimes. The picture shows for sleeping with it. I’m definitely happy. I got these. They are tough. I like the fact that they have those little recessed holes so they can grab a hold of it and not get it all slimy like the other balls we have.
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Reviewed in the United States on April 23, 2026
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Tyrek
Waukegan, US
★★★★★ 5
Durable and a must have for aggressive chewers
Color: Blue+Red
These are without a doubt the best toys that I have ever purchased for my dog. He's an aggressive chewer and quickly destroys almost every toy I buy. This one hasn't been destroyed yet and the squeaker is still working at about 5 months.
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Reviewed in the United States on June 11, 2026

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