Hijacking an illustration to plant a seed

TL:DR - I'm trying to think of illustrations that will be familiar to JW's that plant seeds.

I was thinking today about a simple illustration that may be short and sweet enough to be used, and hopefully will embed in the mind of a PIMI.

Physical money has various integrated security features so that you can establish if it's genuine. I seem to remember this being used by the Borg to say look for x, y, z when searching for the "true religion".

I've had multiple people say to me that even if the issue that's a deal breaker for me is legit (607, CSA, UN; take your pick) set that aside and look at all the other "good things" that prove the Borg is "the truth".

Here's where the illustration comes in:

If you were checking a bank note to make sure it is the genuine article, how many security flaws would need to be identified before you accept it as not genuine, a fake?

The forger may have got 9/10 of the security elements spot on, but just one error identifies it as fraudulent.

You wouldn't say, "ignore that it's only one problem, everything else seems right"...