I see this mentioned often, and it sounds amazingly useful (especially the part about fixing in production!). But how truly widespread is it among the Lisp dialects to be able to connect to a running program, debug, and hotfix it? I understand Common Lisp has it, but I struggled to figure out how to do it in, say, Racket. Admittedly I'm am relatively inexperienced Lisp programmer, so maybe I wasn't looking in the right place or for the right words. Which Lisp dialects do indeed support the extreme version of this capability to inspect and edit running programs?

Can you elaborate on the assertion you made here? In addition to the important points @elbasti made about tests performed approximately a century ago, what does it even mean for a scientific theory to be "fully backed up"? Such theories can be tested and the tests either passed or the theory disproven but it's not possible to _prove_ such a theory. And to some extent we already know that relativity cannot be the final answer because it doesn't mesh well with quantum mechanics (which has been experimentally tested substantially, arguably even more than relativity has).

One would need to go to space for that of course.

https://en.wikipedia.org/wiki/Portal:Current_events

In addition to what @tokai said, I think it's also important to keep in mind that before Open Access the journal publishers charged subscription fees. The subscription fees were paid by universities and that was also likely largely taxpayer funded (e.g., using money from overheads charged to grants).

github repo: https://github.com/lexi-lambda/hackett

Documentation: https://lexi-lambda.github.io/hackett/

Comments URL: https://news.ycombinator.com/item?id=45858201

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Of course, if that's a factor I'm guessing it's a small one in comparison to expectations about what "modern" software should look like.

Comments URL: https://news.ycombinator.com/item?id=45522575

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@JKCalhoun > in my world-view most humans want to be kind.

These two views aren't necessarily in conflict. Individuals can overwhelmingly want to be kind but still be in a system where society pushes them to behave to the contrary.

Comments URL: https://news.ycombinator.com/item?id=45342068

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Comments URL: https://news.ycombinator.com/item?id=45088942

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I was curious about this so I just did a quick non-scientific perusal of one fountain pen enthusiast shop's offerings. It shows 118 of the ink bottles they sell are water-resistant ink while 935 are not (looking at the Yes/No filter counts for "Water-resistant" at https://www.gouletpens.com/collections/bottled-ink). There's a lot of duplicate inks that can be purchased in multiple bottle sizes, but picking the three most represented bottle volumes (20ml, 30ml, and 50ml) it drops to 24 water-resistant inks and 578 inks that are not water-resistant.

The above includes a lot of "interesting" colors; further restricting to black ink only ends up with 3 that are water-resistant and 26 that are not.

> If it works for you, I'm willing to bet you're twisting your hand in a D position (going over and around the cursor), which I sometimes see left-handed people do. I have cramps just watching that.

I see comments like this occasionally and find it mildly amusing as a lefty who has been writing with a fountain pen for over a decade and doesn't have noticeably different hand position (either compared to righties or compared to my use of a pencil or ballpoint pen). Yes, some lefties do have hand positions that look incredibly uncomfortable and some lefties have trouble with fountain pens, but that doesn't mean it's a general/total non-starter for lefties to successfully/comfortably use a fountain pen.

Pen pushing is a problem if a writer used to a ballpoint pen or a hard pencil and needing to apply pressure to get ink to flow and applies that much pressure to a fountain pen. But once one makes the adjustment to a fountain pen's (low) pressure style, pushing is only a minor annoyance for fountain pen writing until the nib is broken in (at least that was my experience).

As others have said, it's also important to pick the right ink/pen/paper combination so that you're not laying down too much ink and so that it dries reasonably quickly.