I think we should have an LED light appreciation day. They are quietly one of the biggest advances in technology in the last couple of decades. I was looking at a police car yesterday that had someone pulled over and the fucking thing was lit up like a Christmas tree with red and blue lights flashing all over it that were incredibly bright. I don't know if that's actually a good thing, but the fact that it's possible is pretty cool. I don't know what the societal gain is from taking the billions of light bulbs in the US from 60-100 watts down to like 10-15 but I'm sure it's huge. Yard lights and flashlights are an order of magnitude brighter than they used to be while using less energy. Headlights in cars are so much better. You can have lights in every imaginable form factor and not only do they last longer than the old bulbs, but they're still very affordable as well. On top of the practical benefits, the lights in my TV room can be any color and react to music playing or even what's going on on the TV screen and when you don't feel like doing that silly shit, they are still perfectly functional as just plain lights in the room. I wouldn't have picked light bulbs as something that would make a giant technological leap in my lifetime but they really have.