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Joined 2 years ago
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Cake day: June 21st, 2023

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  • In Germany:

    I don’t remember ever seeing “combined lights” with single red or yellow lamps and multiple greens. Level crossings often have only red and yellow lights, missing green.

    Traffic lights are positioned at the entrances to intersections, not the exits. They also come with backup signs (stop sign, yield sign, etc.) for when the lights are disabled or defective. Working traffic lights override these signs.

    Solid green also means an unprotected left turn that must yield to oncoming traffic.

    A green arrow traffic light can override a solid red to give you a protected turn. A green right arrow on a sign gives you an unprotected right turn on a red. Without this, you cannot turn right on a red.

    Flashing yellow means ‘caution’ in general and is usually used on auxiliary lights to warn about crossing pedestrians after a turn, who have right of way. When the main traffic lights are flashing yellow, they’re disabled or defective.

    I remember that the city I grew up in, long ago, used to disable many traffic lights at night. Their website claims that “due to the large number of visually impaired and blind citizens, the traffic lights at the most important traffic junctions are kept in operation at night”, so I guess this still continues. The village I’m living in these days has no traffic lights at all.










  • Well, Wikipedia claims

    The Earth has an internal heat content of 1031 joules (3×1015 TWh), About 20% of this is residual heat from planetary accretion; the remainder is attributed to past and current radioactive decay of naturally occurring isotopes.

    In that sense, it’s the only renewable energy source we have that’s not indirectly powered by the sun. It’s most similar to (proper) nuclear power, but the latter isn’t “renewable” because it requires digging up fuel from the crust.







  • This is a nonsense comparison as these features serve completely different purposes, while only having in common that advertisers currently use user tracking to achieve the same.

    Topics data-mines your browsing history for information about your interests and reveals this information to advertisers in order to improve ad selection. It’s meant to replace ad networks tracking each individual user’s visits to connected websites and building that profile themselves. Since this is, in a way, much more powerful than tracking cookies, Chrome has a scary dialog asking for it to be enabled, and I don’t think we’ll be seeing it in Firefox. “Using different links” cannot replace user profiling at all.

    PPA doesn’t provide any new capabilities to advertisers. It’s a privacy-preserving way of measuring ad campaign success that is currently done by ad networks tracking individual users from ad impressions to conversions. “Using different links” is also defective, as advertisers need to connect ad impressions to conversions even if they are not immediately connected through a click on the ad.

    If these features become generally available, this reduces the leverage advertisers have on legislators to prevent tracking from being outlawed. Mozilla will be hoping Chrome picks up PPA.