B + A = BA

Achei piada ao modo como esta gente nos faz perceber coisas tão simples como... Polímeros!

"It may help to think of an adult and a child walking through toy store. The adult will walk through fairly quickly, but the child is going to get distracted by all the cool toys, stopping to look and play with each one. It's going to take the kid a lot longer to walk through the toy store than it will the adult. Polymers are the same way. The bigger ones pass uninterested in the pores in the beads, but the little ones in their curiosity have to stop to check out every little pore. So the big molecules pass a lot faster than the smaller ones."