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Comment Power Surges (Score 1) 674

From the article:

On a forum dedicated to the London Underground, members have pointed out that plug sockets on the trains are for cleaning equipment deployed when trains are in depots. They recommend not charging electronic equipment as there is a risk of power surge: âoeIf something was directly plugged into it (for example a standard computer, or a laptop without a battery in) the equipment would probably be damaged at any section gaps where the power supply changes from one substation to another!â

It's basically to avoid getting sued if a power surge breaks your device.

Comment Hard drives & Scooters (Score 1) 431

"Made in China" has been a warning label for Hard Drives for a long time now. Abyssmal quality control/High failure rate.
Scooters coming out of China have been literally falling apart after about 1200km of driving them and dying after a few thousand more. Repairmen aren't even touching them anymore.
Chinese cars (Landwind) have been on the European market for a while now. In 2010, the CV9 model went through a crash test and failed pretty miserably.
Maybe they've learned from their mistakes, but probably not.

Every nonzero finite dimensional inner product space has an orthonormal basis. It makes sense, when you don't think about it.