Riding in the wet

[SEPTIKANGEL]

I'm not sure what I meant but I was clearly wrong  :lol

:lol .........Not clearly wrong Rob, it was a good question that others may have been pondering, not just you.
There's a distinction between, Must not, Do not, avoid etc.  Highway code has these phrases backed up by legislation. Must not cross solid white's on your side, whereby broken white lines around hatch markings are 'avoid' ... (and there are always exceptions  :rollin
It's important when studying/learning with Roadcraft that while advice may be given against using front brake or changing gear when cornering, it's just that ....advisory.  There may be times when you need to change gear 'cos you misjudged your initial choice and 'specially in the wet, a careful and smooth downchange (with good clutch control!)  may be beneficial.