Especially with a cuisine that I'm new with, I know I couldn't come up with the recipes that have been developed over the centuries in their places of origin, by just taking 20 spices, for instance, and and making an Indian spice mix. And many seasonings are what I term essential - while I see some recipes where people have substituted things like lemon zest for lemongrass, or lime zest for lime leaves, when making Thai food, or the carob powder in place of chocolate, they are simply aren't even close. And how 'bout all those baking dishes - all those bread recipes, with a lot of the science behind it, in some of my favorite books, and those favorite cookie and dessert recipes in my favorite books of Maida Heatter. How would I have ever come up with those recipes - trial and error? After making a lot of some things, it's easy to make some variations, but especially with baking, which requires more exact measuring, it's not easy to just throw something together at random, and get the same recipe every time.