A job candidate interviewing for a technical position gave this example of a technique they have experience with: they joined PVC pipe and fittings using a two-component cement system in which one component is clear and the other purple, by putting one component on one end and the other component on the other end, and sliding them together.
I said I thought they might be confused, and that there may be a thin purple cleaning solvent that one cleans both ends with, and then a thick clear cement that one coats both ends with before putting them together.
They said, no, definitely not, this is a two part system that reacts and cures, like an epoxy, and maybe it is an epoxy, but whatever it is, it’s not what I described. This is during a job interview, where they’re kind of staking a claim.
So – I have my own current belief about the thing they described just being wrong. But I don’t know every possible way of cementing PVC pipes together and it’d be wrong to hold this against them if I’m the one who doesn’t know.
Is there any such thing?
Or does the candidate get dinged points for insisting on knowing and being somewhat experienced with something that’s mistaken?