Concave was born with a meme attribute. In the past few days, almost all the OGs in cryptomarket have started to fomo. Especially with the addition of defi3.0 attributes, it caught a wave of attention. Starting from defi1.0, this article will take you through the development stage of defi and some thoughts of the convex protocol in a vernacular way, pure blind guessing. Because of pure hand writing, there may be some omissions in the article, so I don't hesitate to enlighten me.from conc...