I'm in college.
If you made that mistake, the professor would circle it, yes. But he wouldn't say, "You know, because of this error, I have completely ignored your statements, disregarded your ideas, and furthermore, I have lost all respect for you as an individual."
"You put the wrong date! I can't believe you did that! You've lost all credibility as a doctor."
If you've been to college, I'm sure you can think of science or math professors that use improper english because they're from a different country.
I guess that invalidates their theories, huh?
