Now, as simple squaddies, we've never been keen on management speak like critical path analyst etc, but we do seem to sort the wheat from the chaft before deciding to either 'bin it' or 'sack it', so to speak.

I recall the rule of 'it' was the most commonly used indicator but have never bother to compile a definative list. So, I'll kick of with if I/we can't:

smoke it,
drink it,
kill it,
eat it,
beast it,
fcuk it,
wank to it, or
nick it,
it 'tint worth having.

Feel free to add your thoughts...