![What If?: Serious Scientific Answers to Absurd Hypothetical Questions by Randall Munroe, Hardcover | Barnes & Noble® What If?: Serious Scientific Answers to Absurd Hypothetical Questions by Randall Munroe, Hardcover | Barnes & Noble®](https://prodimage.images-bn.com/lf?set=key%5Bresolve.pixelRatio%5D,value%5B1%5D&set=key%5Bresolve.width%5D,value%5B600%5D&set=key%5Bresolve.height%5D,value%5B10000%5D&set=key%5Bresolve.imageFit%5D,value%5Bcontainerwidth%5D&set=key%5Bresolve.allowImageUpscaling%5D,value%5B0%5D&set=key%5Bresolve.format%5D,value%5Bwebp%5D&source=url%5Bhttps://prodimage.images-bn.com/pimages/9780544272996_p0_v5_s600x595.jpg%5D&scale=options%5Blimit%5D,size%5B600x10000%5D&sink=format%5Bwebp%5D)
What If?: Serious Scientific Answers to Absurd Hypothetical Questions by Randall Munroe, Hardcover | Barnes & Noble®
![Unisex Baby Shoes First Shoes Baby Walkers Toddler First Walker Baby Girl Kids Soft Rubber Sole Baby Shoe Knit Booties Anti-slip - First Walkers - AliExpress Unisex Baby Shoes First Shoes Baby Walkers Toddler First Walker Baby Girl Kids Soft Rubber Sole Baby Shoe Knit Booties Anti-slip - First Walkers - AliExpress](https://ae01.alicdn.com/kf/HTB1hD2ld81D3KVjSZFyq6zuFpXav.jpg)
Unisex Baby Shoes First Shoes Baby Walkers Toddler First Walker Baby Girl Kids Soft Rubber Sole Baby Shoe Knit Booties Anti-slip - First Walkers - AliExpress
![Amazon.com: SEREED Baby Balance Bike for 1 Year Old Boys Girls 12-24 Month Toddler Balance Bike, 4 Wheels Toddler First Bike, First Birthday Gifts : Sports & Outdoors Amazon.com: SEREED Baby Balance Bike for 1 Year Old Boys Girls 12-24 Month Toddler Balance Bike, 4 Wheels Toddler First Bike, First Birthday Gifts : Sports & Outdoors](https://m.media-amazon.com/images/I/61fFU13zSzL._AC_UF894,1000_QL80_.jpg)
Amazon.com: SEREED Baby Balance Bike for 1 Year Old Boys Girls 12-24 Month Toddler Balance Bike, 4 Wheels Toddler First Bike, First Birthday Gifts : Sports & Outdoors
![Amazon.com: SEREED Baby Balance Bike for 1 Year Old Boys Girls 12-24 Month Toddler Balance Bike, 4 Wheels Toddler First Bike, First Birthday Gifts : Sports & Outdoors Amazon.com: SEREED Baby Balance Bike for 1 Year Old Boys Girls 12-24 Month Toddler Balance Bike, 4 Wheels Toddler First Bike, First Birthday Gifts : Sports & Outdoors](https://m.media-amazon.com/images/I/61tilO4erpL._AC_UF894,1000_QL80_.jpg)
Amazon.com: SEREED Baby Balance Bike for 1 Year Old Boys Girls 12-24 Month Toddler Balance Bike, 4 Wheels Toddler First Bike, First Birthday Gifts : Sports & Outdoors
![Fisher-Price Baby Toy Gift Set with Rock-a-Stack Ring Stacking Toy and Baby's First Blocks Set, Frustration-Free Packaging Fisher-Price Baby Toy Gift Set with Rock-a-Stack Ring Stacking Toy and Baby's First Blocks Set, Frustration-Free Packaging](https://m.media-amazon.com/images/I/61-hEFUBH-L._AC_UF894,1000_QL80_.jpg)
Fisher-Price Baby Toy Gift Set with Rock-a-Stack Ring Stacking Toy and Baby's First Blocks Set, Frustration-Free Packaging
![LEGO Star Wars at-TE Walker 75337 Building Toy Set for Kids, Boys, and Girls Ages 9+ (1,082 Pieces), 18.9 x 14.88 x 2.78 inches LEGO Star Wars at-TE Walker 75337 Building Toy Set for Kids, Boys, and Girls Ages 9+ (1,082 Pieces), 18.9 x 14.88 x 2.78 inches](https://m.media-amazon.com/images/I/81d6QPqK2DL.jpg)
LEGO Star Wars at-TE Walker 75337 Building Toy Set for Kids, Boys, and Girls Ages 9+ (1,082 Pieces), 18.9 x 14.88 x 2.78 inches
![Playskool Step Start Walk 'n Ride Peppa Pig Active 2-in-1 Ride-On and Walker Toy for Toddlers and Babies 9 Months and Up (Amazon Exclusive) Playskool Step Start Walk 'n Ride Peppa Pig Active 2-in-1 Ride-On and Walker Toy for Toddlers and Babies 9 Months and Up (Amazon Exclusive)](https://m.media-amazon.com/images/I/71hag-6c67L._AC_UF894,1000_QL80_.jpg)