The poisonous version of this is "This should take no time, I did a POC myself in a day". Happened when I helped hire a friend to help with a trading project.

The poisonous version of this is "This should take no time, I did a POC myself in a day". Happened when I helped hire a friend to help with a trading project. This friend is simply one of the best coders out there, understands the domain, understands all the coding. The guy who was hiring him threw together a websocket, pulled some data, and thought there's just a tiny bit of work left in the details. He did it in nodejs. Of course figuring out the details was the hard part, made especially hard by not having a clear request for what the project was going to do. Was perf important? What about all the various features? It's really something to look out for as a manager. Don't be that guy who says everything is easy.