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Comment: I wear a watch, so obviously (Score 1) 158

by aussersterne (#47440291) Attached to: Slashdot Asks: Do You Want a Smart Watch?

I am interested in watches.

Whether or not a smart watch is worth it is an open question. If they can provide me something that I think I need with it, then sure. I've outlined a list in comments on previous stories, for quasi-trolls that were about to lash into me for being so general.

But I wear an automatic mechanical beater right now—specifically because it's virtually indestructible, represents only a minor investment (and thus financial risk), and requires no maintenance, attention, or battery-swapping. It's accurate to about 2 minutes per year, which means that about once a year I tune the time on it.

Most of the stuff that smartwatches are currently being said to do I either don't care about (fitness tracking, health monitoring) or currently use a smartphone for with far less hassle (bigger screen, more natural UI) so it'll be a stretch. But I'm open.

Comment: Hard to tell if it's working. (Score 3, Informative) 154

by Animats (#47438917) Attached to: A Skeptical View of Israel's Iron Dome Rocket Defense System

Here's the promotional video from Rafael, the system's maker. If the Iron Dome launchers are in a position to hit incoming rockets when they're still in boost phase, they're clearly effective. When they hit, the ascending rocket's flare disappears. Israel has Iron Dome launchers both forward postioned near Gaza, for boost phase defense, and near cities, for terminal defense. For terminal defense, it's harder to tell if they worked. The incoming rockets are just falling at that point, and success requires blowing up their warhead, not their rocket engine.

Videos show the missile's warhead exploding. That's triggered by a proximity fuse. There's a spray of shrapnel from the warhead; it doesn't have to be a direct hit. Whether that sets off the incoming rocket's warhead isn't visible from the videos of terminal defense.The Patriot missiles used in the Gulf war were able to hit incoming Scud missiles, but often didn't detonate the warhead.

Comment: Re:How about 5BN... (Score 1) 50

I'd like to believe that education benefits from technology - and it might benefit from things like open source ebooks - but making sure the classroom has wireless is a poor substitute for a teacher actually teaching, parents being involved with their kids (not on their own tablets), and kids "bravely" unplugging for a few hours a day to focus on learning.

Schools today babysit students for the state mandatory minimum hours before releasing them to the debt-prison that is college. :/

Yes, I'm jaded. :/

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