Shopping
Versatile little numbers that people love.
Remember when clothes shopping meant driving around town, trying only what the store had in stock, and believing everything a sales clerk told you about what looked good? That process explains many an overpriced fashion faux pas. Now, we can approach shopping with something closer to the scientific method — when people have tried it, worn it, and loved it, they report back. I have pored over such reports (aka did an Amazon deep-dive) to compile this collection of ultra-popular items with another requirement, too: they must also be a fantastic value.
According to the scientific method (or something like it), of all the popular, trendy clothing on Amazon, these pieces give you the most bang for your buck.