I can't stand when people spend a single day familiarizing themselves with a new technology or concept and then come to the conclusion that's it doesn't work and really the old way is great. Not saying all new things are better. In fact, I'm probably more in favor of tried and true methods than shiny new methods. But one day? Really? That's all it took? In this particular case it's code-first DB development. Again, I'm not a fan myself really. But I have a co-worker who said creating tables and and schemas is much harder using code-first instead of DB first. I mean... Neither are hard. I personally think it's easier for basic things like tables and schemas but either way it's not hard. Now SQL triggers and index's all that fun stuff? Yeah code first is probably more complicated (I'm clearly not a database expert or anything). But a day? Really? You know enough to force a design paradigm on the whole company now? Wtf.