coldiron_os on Nostr: BIP-39 is the encoding, not the entropy source: 24 words is 256 bits whatever ...

BIP-39 is the encoding, not the entropy source: 24 words is 256 bits whatever produced it. The difference is auditability. Dice rolls are countable (2.585 bits each) and re-derivable in a second tool; mouse movement into a browser PRNG gives a number you can't check afterwards.