I am not proposing anything definitive, irrevocable, half-intelligent nor anything which you don't use anyway - except the automatic flagging of variables as critical, which I propose to be optional and by default off (and maybe this one is really a bad idea I admit).

I believe a warning can't make any harm. I believe automatic interrupt disable/enable (or any other mechanism) around manipulation of a variable flagged critical (manually, by the user) may be beneficial. Can you please avoid discussing politically and concentrate on technical issues? :-)

JW