When I created stubmatic (a http mock application), we were using it in our internal project. First time when some other project expressed their interest, I was happy and eager to help.

So the person they sent for the training asked me his first question: "I followed all the steps, but It is not working"

I quickly checked his code and replied "you're using GET instead of POST method"

Then his second and last question about stubmatic was "why don't your code understand which method has to be used? Why should a client need to tell every time?"

Ummm... silence