[zza371creek]

You are correct that many of the Software best practices have no scientific evidence. Also if you step outside of the software world into best practices of Business management, sales and accounting. They also not backed up by any scientific evidence.

Most of the best practices get developed by a smaller group of companies normally larger ones and everyone copies them since it worked for google it will work for us.

Having worked for different size companies and in different industries. I can tell you that most of the time they don't work well.

Some huge successful companies got big and do well not doing any of the normal standards. It was mostly luck and creativity.