On the technical side, if you have actually worked with certain stuff you will have gone through certain experiences that everybody else has gone through. Some

On the technical side, if you have actually worked with certain stuff you will have gone through certain experiences that everybody else has gone through. Some tools are absolutely necessary but horrible to work with in certain ways. Some libraries are a pain in the back to use, but are unavoidable. Compiling certain components may be a huge pain. Stupid example: the person claims they know CSS, and you bring up the subject of aligning a div for the first time.