About 1 in 8 seed phrases (24 words) contain at least one duplicate word.
For 12 word seed phrases there's about 3.2% probability.
Nostraterrestrial
npub1234r...kha8
Here’s a chart of how many sats we won’t mine per block due to the rounding down to an integer number of sats, for each halving epoch.
We’ll reach peak "loss" after the 17th halving. 
