The French have an expression something like “’esprit d’escalier” which is the dumber than dumb feeling you get when you walk onto the stairs and you realise what you should have said.
In normal life you just have to accept that you can’t always say that stunning line at the right time every time, but for interviews you should be able to find the right words more often. The reason is that you know most of the questions that are going to be asked. These interview notes are your guide to lots of the questions and themes that happen at interview so you can be prepared. Hopefully you will be “Rocky at the top of the stairs” and not a ghost in sight