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1. Energy is limited.

Sun’s mass is 2e30 kg. E=mc^2 gives you max energy. (2e30 * 9e16).

Assume we start with one joule this year. Each year increasing energy output by 5%.

How long will it take till we use-up whole sun?

ln(2e30 * 9e16)/ln(1.05) = 2230 years

How long till we use up whole milky way? (Around 1.15e12 solar masses)

ln(2e30 * 1.15e12 * 9e16)/ln(1.05) = 2799

How long till we use-up whole universe? (10e53 kg)

ln(10e53 * 9e16)/ln(1.05) = 3348 years

Our potential is not limitless, exponential growth is not sustainable even on universe’s scale. Eventually we will reach hard wall.

2. Crypto heating (mining and poW) is very inefficient use of resource (as in, percentage of planet using crypto vs percent of total energy required for it). Not a smart thing for humanity to do.

3. Energy being limited, makes it shared resource. Crypto heating raises energy prices for others.



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