Right but there is so much more information of every kind today than what used to exist at the time of Socrates. Attempting to remember all that information would probably be infeasible.
Which is clearly false: the meaning of words being readily looked up, for example, or common multiplications.
Probably he meant "I never make effort to ...".
Which IMO is foolish - for most people - but probably reflects more that he easily memorised facts without effort (something I was fortunate to experience in my youth and which is now sorely missed).
He made that comment in reference to not knowing the speed of sound off hand, and it is not remotely foolish. It is a very bad student that wastes his time memorizing endless reams of facts, rather than trying to understand the deeper meaning of what they are reading.
>Education Is Not the Learning of Facts, But the Training of the Mind To Think
-Also Einstein
Information is only useful insofar as it furthers understanding. It has no value outside that beyond parlor tricks or game shows, especially in the modern internet age.
If you work on subject matter you commit it to memory simply through familiarity, this is a great boon as it simplifies many analyses to recall facts.
What good knowing how to think without having the standard inputs; this enables focus on the wider problem rather than interrupting to feed in necessary facts.
E=hf ... but hang on, does that make sense, the trained mind can analyse it. Sure you can look up energies, and Planck and frequencies but having any of those to hand makes your work more efficient. It doesn't just have to make theoretical sense except for v. v. few ... and I say that as an erstwhile theoretician.
Don't get me wrong. Learning facts as a goal is inherently misdirected. But facts are the atoms on which the trained mind works.
Moreover axioms are facts that can't be intuited or derived, they must be learnt of existing systems or defined of new ones.
I think the position espoused in those quotes is hyperbolic.
Case in point: Tycho Brahe's exceptionally detailed and accurate astronomical observations. His recorded work on the position of Mars allowed Kepler to establish the laws of planetary motion using elliptical orbits around the sun. Without that data (and logarithm tables and trigonometry), it may have been impossible to test theories of celestial mechanics and physics that kick-started the scientific revolution.
I really doubt it's feasible to memorize it in a single hearing without paraphrasing. The human brain couldn't have been different a few millennia ago, and we know that the greeks used the same memorization techniques we use today (e.g., the memory palace, chunking, ...).
We also see in history specific people tasked with recitation, and high status coming through that ability. Suggesting it's a rare and learned characteristic.
Nitpick: That only suggests that this ability is rare, not that it is learned. (Not saying it is purely talent; everything I know about the brain suggests otherwise. But not just the historical evidence.)
I think you'd be surprised. It's kind of like your house. The only necessary things there are the bed and the ceiling. And yet life would be much more miserable without all the random stuff you probably store in various cupboards.
These days I think of it in terms of cost to benefit ratios. I've for instance spent countless hours on Reddit, and while I got some benefit from it it is clear that the overall cost was negative even if it is impossible to know the exact figures.
It's still unclear to me which parts of the Internet provide a good ratio.
I guess for most sites, the cost-benefit ratio is a function of the time spent, following a steep downward slope. When I spend 15 minutes on HN every workday, it provides me with interesting stories and insights. When I spend two hours, it ends up draining more energy than it replenishes.
