[colechristensen]

I think the key is what you get to say while claiming "I am an X, therefore (implicitly) trust what I say"

Whether it's a medical professional, architect, engineer, etc., I don't have a problem with the speech and actions of a person being regulated by a professional organization while they are claiming to be of that profession. i.e. legally protecting the term doctor/nurse/engineer/lawyer/etc. is just fine.

If you are not, you need to make it clear that you are indeed not a licensed professional.

[ghaff]

The difference is that one of those is not like the others. There really is no such thing as an unlicensed (medical) doctor, nurse, or lawyer. While most engineers are not licensed as such--and PEs don't even exist for many branches of engineering. Of course, they can't say they're PEs if they're not but there really isn't a default assumption, aside from perhaps in civil engineering, that an engineer asserting expertise in something is licensed.

[jbay808]

In Canada it's more like the former -- you aren't allowed to even call yourself an engineer unless you have a P. Eng.

[ghaff]

Fair enough. I was talking US where PEs are fairly rare outside of civil engineering and other subsets of engineering that deal with regulatory bodies a lot.

Generally in the US engineer is used pretty loosely. Some states are stricter. But even those who are, like apparently Texas, my first-hand experience is that most people don't pay much attention.