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Comment Re:40 is an artificial boundary (Score 1) 286

I believe you, but only because of the particular details you included: you train hard every day, and you used to be overweight and sickly. Otherwise, even a reasonably fit 50-year-old is no match for a normal, unathletic 20-year-old.

At 40 I was slim, fit, and healthy, with good stamina, and sexually very active. At 50 I was beginning to notice changes, and my activity level dropped. By 60, all the above had changed dramatically, due in part to specific medical issues.

Comment Speed (Score 1) 465

I am an avid reader who just received my first Kindle as a Christmas present. A couple of books later, I have noticed that my reading speed on the Kindle is a fraction of what it is for the same text on paper. I decided to re-read a novel before starting its sequel, and after a few chapters switched back to my old paperback. I found myself reading about 3 times faster on the physical book.

This is at least partly because there is so little text per page on the Kindle, a function of both display size and line- and letter-spacing. But beyond that there is also an issue with readability or legibility. The font used on these devices is remarkably ugly.

These are not permanent, unchangeable characteristics of E-readers, so I hope things will get better as the products evolve.

Comment Nakamura Lock (Score 2) 183

This design appears to be identical to one I learned to make from a Klutz Press book. It is called the Nakamura Lock, after its designer, and it is definitely the best paper airplane I have flown indoors. It seems kind of tacky to rename it - the designer should get some credit for his work.

Comment Re:You know... (Score 1) 611

And yet, there are many, many people who have used amphetamines every day for years without running into these problems that you claim to be inevitable. Front line troops and military pilots, for example, are routinely expected to self-medicate to optimize their performance. ADHD patients get Adderall from their doctors (when supplies permit). And I have personally known many ordinary people who have used speed recreationally while maintaining their jobs, health, and relationships. Demonizing it is just not helpful.

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