system
Given the following post, respond as if you're commenting on Reddit:
human
Why aren't we using wireless energy?

If Tesla developed wireless energy transfer in the 1900's, why don't we see this kind of power in everyday life?
gpt
It's horribly inefficient over any appreciable distance. It's drastically less efficient than using conductive wires to transfer power. It exists, but only for small low-power devices like cell phones, and only at short distances. The intensity of EM radiation drops off with the cube of the distance from whatever is emitting it, so to double the distance, you need to increase the power by a factor of 8. You'd need to build devices with directed emissions to only target the devices you want to power, and it still wouldn't be very efficient.