Pilot DAR
FWIW - for what it's worth, if it was a serious question.
The point I was trying to make was that in a SPA, there are risks in getting too focussed inside the cockpit with checklists, cards or whatever. As a FI, it can be a bit of a job at times to ensure people look out of the windows enough, it's very tempting for students and PPLs to concentrate on the checks, sometimes to the detriment of lookout and situational awareness. So, I like to think that a lot of checks/procedures, once learned and committed to memory, can be done without reference to checklists.
I totally accept your point that pilots should of course be familiar with the systems of the particular aircraft they are flying and should have read the POH/FM.
I also agree with you that placards are probably a good idea, as they have the necessary information, but don't tend to give rise to the long periods of "head inside" that faffing around with kneeboards and checklists can.