"and certainly when contemplating disagreeing with my wife."
No-one has invented a warning system robust enough to provide effective protection for that scenario . . . . .
However, in most other cases, the old "hairs on the back of the neck" work just fine, but, I guess we are all prone to becoming goal fixated (the "goal " normally being to arrive . . . I.E. land at destination )
In these circumstances, a competent trustworthy colleague, who may be marginally less goal orientated , and, being younger hopefully has less "inhibitions" against speaking up, can be worth his weight in gold, but, he has to have the experience to realise too that it is all going South, and the industry "norm" is to increasingly fill the vacant seat on the right with low experience guys . . . . .