Yes, there is no problem as long as you agree with X about what is a "real" error and what isn't. X includes the language authors (who are using this more and

Yes, there is no problem as long as you agree with X about what is a "real" error and what isn't. X includes the language authors (who are using this more and more in the stdlib as pointed out elsewhere) the authors of any library you use ... but transitively, so this includes the authors of any library you use indirectly as well Hmmmm ... what was the problem with (unchecked, or python's) exceptions again ?