Thank you for the lesson. If I could return the favor, you may be interested in linguistic descriptivism. You probably won't agree with it but it may be educational nonetheless.
I'm always happy to put a smile on someone's face, but I think if you reflect on it you'll find that you have evidence to support the impossibility of goals you believe impossible (in other words, they have been "proven otherwise" in the past). If you've made up your mind without any evidence, well, you do you but that may be a belief that hinders you rather than helps.
Guest: You know how sometimes you can pronounce the same word differently? Well—two things can be true.
Interviewee: Wait, what are you saying?
Guest: When you're from the Midwest, you say 'meeyulk' for milk or 'peeloh' for pillow, and that's not incorrect. It's just, you know, two things can be true. So, that's what I was saying.
Interviewer: Yeah. [wideyed confusion]
Guest: So, what's that all about?
(hint: it isn't linguistic descriptivism & I'm not the guest in this scenario)
I'm always happy to put a smile on someone's face, but I think if you reflect on it you'll find that you have evidence to support the impossibility of goals you believe impossible (in other words, they have been "proven otherwise" in the past). If you've made up your mind without any evidence, well, you do you but that may be a belief that hinders you rather than helps.