John,
Again I don't think Gerald is referring to people straying with purpose. It's more to do with people who encounter problems because they simply haven't followed the directions.
yup it is easy to make mistakes when one isn't careful, i couldn't agree more.
i didn't realize that is what he was talking about, not being carful.
a lot of seasoned photographers are the first to chime in when someone is trying something new, experimenting to see what might happen if one does this/and/that
and often times they chime in to tell them "it will never work" type stuff instead of letting the person see for themselves what might happen.
ive used chemistry for unintended uses ( print for film developer for example ) was told by people " i'd get golf ball sized grain" amongst other things
(15 + years ago ) and my results were NOTHING like i was warned they would be, and i still use print for film developer to this day.
so if someone wants to throw caution to the wind, and see what might happen, against prevailing good advice from seasoned professionals, i think they should
because maybe through their own bad technique and contempt for their materials, they might be able to get images that they like.
the only way progress is made is for people to do things they are typically told not to do.