I want to know who thought of these things

When i am cooking some recipes i wonder why we eat some of the things we do. Who thought that eating an onion would be good? they smell bad and don't taste very good uncooked, so who started using them as food? Chris thinks that they were initailly used as poison in food, which would be plausable. Another one is flour. How did that work? did someone just start to starve and say maybe if i crush this grassy, seedy looking thing i could mix it with eggs and milk and yeast ( where do you get that from) and make a crusty-on-the-outside, fluffly on the inside thing and i shall call it bread. I know that there are some things in history that are mistakes, like the crepe suzette, and the ice cream cone. But some other things just leave me dumbfunded, like coffee. It taste nasty, but when the natives ate these beans ( not knowing if they were poisonous or not) felt energentic and whatnot, so they kept going....why? if it tastes nasty it usually means its poisonous right? isn't that the philosophy in the woods "if it tastes bad spit it out"? What about Ranch. I know it was invented in the 60's or something on a ranch in hidden valley and then it blew up on the market, but what were these people thinking when they mixed buttermilk with all these other things? I am glas they did it, i just want to know what is going through thier head at the time. Then i wonder if we have passed the carrying capacity for inventing new things. Are we ever going to run out of things to invent? For technology i would have to say no, but for making new recipes ( can you tell i am into cooking), how far can we go until there is no more new things?