On: GravityLight: Generate light with gravity

[CyberDildonics]

You can use it to read and it is free.

[imaginenore → CyberDildonics]

It's not free. It's a very inefficient way of converting food to human energy to humans lifting weights that in turn power the lights.

If this is targeted at very poor people, food isn't cheap for them.

[Gravityloss → imaginenore]

If you think about the methods of farming worldwide etc, they also use a lot of human labor etc because there's not enough sophisticated industry to run everything on solar charged battery powered robot tractors... So you have to accept a local optimum.

Reading for half an hour per day could have large payoff, compared to reading very little ever, because it's too dark.

[CyberDildonics → imaginenore]

Neither is kerosene. Many people reply based on their gut feeling, but that doesn't mean it lines up with reality. A chocolate chip cookie has enough energy for a person to go jogging for 20 minutes. No one is going to starve to death by lifting a weight every 20 minutes for a few hours at night. They might be able to lift themselves out of poverty if they stop paying for kerosene and read (or learn to read) in the time that they aren't working, which is likely at night.

[kragen → imaginenore]

The energy involved here is between one and two grains of rice.