Well said all.
777 or 172, checklists ARE for all. If you want to fly, then do it properly. It is important to commit regular checks and emergency drills to memory, for obvious reasons. But anyone who does there walkround, start up and power checks from memory is going to get a wake up call one day. Probably at 500 feet on the climb out, an engine failure and.....oh look, forgot to turn the fuel pump on!
...now what....?