Firstly, "it's always white" is domain-specific knowledge that most of us don't have. I've seen the white plumbing tape for sure, but I didn't make universal assumptions based on that.

Secondly, another comment gives examples of similar tape that isn't white. https://hackernews.hn/item?id=34554613

> Firstly, "it's always white" is domain-specific knowledge that most of us don't have.

How is common home repair supplies count as "domain-specific"? You don't have some teflon tape in a storage drawer somewhere in your house? Have you never replaced a faucet aerator or shower head?

As to the other tape, that's apparently for gas connections (I've never of it personally) when the original poster specifically specified plumbing tape.

> You don't have some teflon tape in a storage drawer somewhere in your house?

Probably, I'd have to look. But like I said "the last one that I saw was white" is one thing, "it's always white" is another very different thing. Is this a standard that it _has to be white_? If you can't answer that, then you have no case at all that it's not "domain specific knowledge".

I don't have a roll of the stuff, no. I've seen them. I've seen plumbers use them. And I've changed a couple of shower heads, but I haven't used it.

So, I'd file this under "one persons experience is not necessarily a guarantee of universal experience."