AskScience

Hi fellow rats, While i was looking outside on my balcony this summer. I wonder, why do we need so many street lights? It's absurd. The sky is orange, and those light are slowly being replaced with white LED's. Entire streets are fully lit with blinding LED's and there are almost no people or cars around.

My question is?: Why do we need them in the first place? Whats the point? There's this thing called a "flashlight". You know, those small torches you hold in your hand.

And vehicles have headlights, which i'm sure is more than enough to see what's infront of you.

Why spend billions illuminating space just for a false sense of safety?

Hi, I want to self-study some pure math. I have a TI-84 CE from high school. But that thing is like 8-bit and it graphs quite slow. Even the python editions are 8-bit. When i think of 8-bit, i think of the old atari game consoles from the 80's.

Are graphing calculators obsolete in this day and age?

There are only 2 good 32-bit calculators that are not ancient dinosaurs and those are the hp prime g2 and the TI-Inspire cas editions.

Should i buy one of those or skip them all together for R / Julia programming languages?

Apart from quick and one-off calculations, they don't seem very usefull.