Yes, we are making an assumption, and yes, (if it is true) it was true well before anyone was around to assume it, and yes, making a different assumption does not change it’s truth value. That’s part of what “assumption” means in this sense.
Yes, we are making an assumption, and yes, (if it is true) it was true well before anyone was around to assume it, and yes, making a different assumption does not change it’s truth value. That’s part of what “assumption” means in this sense.