Real limitations aren't "real" though, in the sense that some sort of boundary or new knowledge extends the demarcating line between it being a "real" limitatio

Real limitations aren't "real" though, in the sense that some sort of boundary or new knowledge extends the demarcating line between it being a "real" limitation and an "unknown" limitation. A matter of degree I suppose. I'm certainly not going to argue that humans will suddenly begin sprouting wings on their backs, but people at some point in history - I'm sure - claimed human flight to be an impossibility, a gift only birds and gods possessed. That is, until the airplane was created, which extended that "limitation". Many etiological examples can be drawn, but can you not agree that saying "real limitations will always restrain you" is too absolutist?