I would argue that 99% of us don’t actually memorize/absorb ALL of the material we’re responsible for in medical school. Otherwise why would we need to do any further training (i.e. residency)? But we do learn a lot and we learn it quickly, because that’s how our degree programs (in theory) set us up to have the solid foundational knowledge to hit the ground running as baby physicians during the first year of post-grad training. It’s during residency that real doctors are made IMO, and one of the key things that sets us apart from other healthcare professionals. Physicians have thousands of hours of clinical work before they’re allowed to practice medicine independently, and during that time is when the majority of us will truly solidify that vast knowledge base into something useful.

I see you’re non-trad thinking of applying. I once was myself. Personally, I wouldn’t let the volume of information alone scare you — there are many other things to be considered in determining if this is the right move for you. If you have the desire, the stamina, and adequate support/stability… you can make it happen. But it’s not for the faint of heart.