In fact, In general I think the justification for writing anything down is pretty poor.
I see all the god damn time, NO explanation given... 'Oh yes, never mind the insignificant, 'incidental' billet don't draw attention to it' (and everyone nods) and then they go off and draw every possible bit of attention to it by giving NO reason for it. None.
I know that if I was doing it for real, sometimes I would have it written down. But if we are working by this 'magic if' then I know I would at least provide some reason for doing so and that I would have no need to touch the billet.
But therein is what we do, we find excuses for why we need to touch the billet perhaps the spectator needs to do something with their hands, perhaps you want to show everyone that there are no cuts or hole is the paper to see through.. But what is happening when there isn't even any excuse provided? Well the actions loose logic, and when they loose logic they arouse suspicion and they stop being 'incidental'.
Perhaps no 'visual compromise' as the term would be is impractical, but certainly worth aiming for. When we can't we are already taking liberties and straying from what we should be doing- this is very simple logic, in fact it is in Corinda, right from the very start of our mentalism education we know:
You are a mind reader and you 'should' be able to to say to somebody 'think of a name!' and three seconds later blurt out 'dr livingstone' and the victim nods his head in reply. Any deviation from this theme is a stride away from what you would do if you were the real thing.
Corinda
Therefore, once we start 'deviating from that theme' then the onus is on us to not only keep it as clean as possible, but to justify any deviations. Preferably, we shouldn't even touch the billet if we have to deviate enough from the theme that they have had to even write anything down. Why are we putting things in wallets and envelopes and tearing things up? God only knows, and the spectator certainly doesn't.
I am sure there are cases where it can be justified- like I said before, I think a real mind reader might just tear up the bit of paper under the given circumstances for the Bill Bernstein (Aha.. remember the name now) centre tear. But our job is to create those 'given circumstances' to justify the deviation.
There is no justification for no justification. It's the very basics.
Sorry.. I've written another essay, but it's my plea against dodgy mentalism.
''To go wrong in one's own way is better than to go right in another's.'' Dostoevsky's Razumihin.