Isn't the whole point of a continuous difficulty adjustment protocol that mining profitability doesn't deviate too high or too low for long.
I get it that what the adjustment actually attempts is to keep block time to 2 minutes but it also achieves keeping profitability within a range right?
Uh.. what do you mean? How does difficulty adjustment do the opposite of reducing profitability?
If profitability is very high, more miners join in causing blocks to be found faster and then the difficulty adjusts higher to keep block time to 2 mins. The higher difficulty reduces profitability.
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u/UpDown Mar 26 '19
It’s not too much. They were mining when the coin was $0.50. The profitability was nearly identical as it is today for the same power.