>Or not able to read at all.

"Hello, how should we address you?". Not everything must be done in code.

>when you interface (maybe indirectly and unknowingly) with a system using different constrains

I have yet to encounter a system recognizing assets and making automatic decisions based on name. It would fail already if the user switched first/last name.

>people exist that actually get it right

You could have started by explaining this right way and we'd be all smarter.