"mrwallace" wrote
Although there are always differences, I sense that most single
pilots operations use a checklist as a "have I forgotten anythig?".

Which is the manner in which we used checklists in the airline
business. A brief quote from my PanAm Boeing manual (which
presented an entire page on why, when, and how to accomplish
checklists) reads as follows:

"The crew can and should accomplish their functions as
circumstances and good judgement dictate. The checklist
then becomes a verification that items have not been
forgotten."

Bob Moore
PanAm (retired)