Its kind of interesting: the 555 is such _horrible_ timer. It can't do a 50% duty cycle without extra BOM parts, even more parts to make a real PWM out of it, and it has terrible temperature and voltage stability. But somehow it persists.
“Hi, Jeff H., I have almost never used a 555. Maybe never? I use op-amps, LM324's, LM311's, LF356's. I use 74HC04's and 74C14's but not 555's. I've used ECL fast logic, and discrete transistors. But the 555 just does not do anything precise, or even semi-precise, that I need done. So that's one thing I can "share" - my favorite circuit to use a 555, is: a blank piece of paper. Never touch the things. Go ahead and print that. / rap”
> If there's one thing surgeons like, it is advice from other surgeons
I’m guessing that /s applies here; but since I’m married to a surgeon and through her, understand that the truth around that, and around advice-taking and -giving behaviour in and out of the OR is far more nuanced than you might imagine.
Ideally make it a group session. If there’s one thing surgeons like even more, it’s advice from a bunch of other surgeons dialed in from lunch, all giving advice at once.
I just listened to the examples on the front page. I'm blown away.
I watched streaming kill the dreams of 90's bands, when getting a demo CD in the hands of an A&R rep was legit pursuit. This will kill the streamers. I expect to see an AI streaming service in the next 7 years with channels, and another in 15 years that will match my current mood. Honestly, I'm kind of excited about this because sometimes I just want music that serves a purpose and not some kind of emotional/nostalgia trip... but I can also see a future with a much smaller population of people who know how to play instruments and missing the variety of music writers.
If you are a new user, I suggest reading the guidelines [1].
> On-Topic: Anything that good hackers would find interesting. That includes more than hacking and startups. If you had to reduce it to a sentence, the answer might be: anything that gratifies one's intellectual curiosity.
I think there should be a higher standard than just posting random links without context. How about a single line of text explaining why it is interesting to them?
Your comments in this post are low quality and add nothing to the discussion. Ironic considering your complaining about peopling posting links that get voted on.
Once, when hospitalized, I had an arterial BP monitor that was continuous. The last systolic number I remember seeing before passing out from sepsis was in the 70s.
If you're +-7 in your reading, don't panic yet. If you're there with a stage 1 or 2 hypertension diagnosis (130-140+ systolic), the margin of error discussed in this article isn't necessarily meaningless, but remarkably close to it - you need to address an issue there.
More as a PSA for you hardworking programmers and IT managers out there: if you have chronic hypertension, address it sooner than later. If you think to yourself that you'll start jogging daily starting next week, and your doctor is giving you the option for meds, just get on the damn meds. If you start an exercise regimen that can quantifiably manage it without the meds later, great. Don't let the perfect be the enemy of the good. Hypertension is the silent killer, and before it kills it contributes to all sorts of other bad problems and conditions.
Yeah, I empathize. Glad you're doing better now, assuming you are. I would get awful headaches and nausea (like hide in a dark room, photophobic, overly sensitive to sound, smells, wishing I could chop my head off). For years I didn't connect the two. Felt like getting the worst two-day hangover without having drank anything, but if I had measured my blood pressure at the time it would have been well over 150. I clocked in at 170 during one of those episodes when I went to urgent care. For years I had just dismissed as having overdid it the prior week and just needed to rest. Even if you can put up with the pain like a badass, it's not healthy for your system to be redlining so often. It does its damage in the aggregate.
I'm pretty sure if I knew I could never lose a dime of my billions of fortune I'd be working on teleporters, warp drives, and time machines. People would call me a genius because I could pay for the press. Musk isn't a visionary, he's just a rich nerd throwing money at really cool things other visionaries imagined before he was born (all of his companies were ideas other people already had been working on; 100%), and then failing upwards when it doesn't work out.
Yet, there are tons of people much richer than Musk was (before Tesla and SpaceX) who have achieved nothing of note with their billions.
It’s easy to shout from the sidelines that you’d do better given the opportunity, but reality suggests it’s more difficult. It’s the HN equivalent of sports fans hurling abuse at their football team’s players.
I don’t credit just Elon. It’s tons of people. But he did do a good job getting this thing going and has some role in pushing them to take risks and do hard things.
Shotwell is probably a big reason SpaceX does better than Tesla or the others. Elon needs to be paired with a cooler head that knows how to manage well. I get the sense the others don’t have anyone as strong in that role.
