Suppose that Alice has a PhD but then left academia more than a decade ago. Alice has written a short paper on a topic unrelated to her thesis. Suppose moreover that :
the paper has been submitted a few months ago to a respectable journal, and is currently under review as per the submission system
the paper has not been put on the arXiv (both for fear of publicly claiming something that turns out incorrect and having to retract it, and of being scooped by someone with access to a fast-track journal)
Now Alice fears the review process may take a few more months at least, and really wants to know very soon whether or not the paper is indeed correct (it does feel so, but maybe something has been overlooked).
The question is then : how to indentify an academic that would be
of impecable ethical standards (no risk whatsoever of scooping the paper)
willing to have a cursory look within a few days (not a proper review, but maybe half an hour to think about it) and say whether or not it may well work
Or would you just submit to the arXiv, and accept to look like a fool if you have to retract it the next day ?