QDM - External and inflight aside, are you saying that any other kind of checklist is also tosh? i.e. "Checklists are [always] tosh?"
paulo,
My original post referred to the 'simple aircraft most of us fly in this forum'. For simple aircraft using a written checklist internally can anaesthetise the brain and lead to automaticity. Naturally, on more complex types or twin crew operation it's a different story, but there's no point making something simple more complicated.
QDM