Seed Random Number Generator C A BIP39 mnemonic sentence is actually a set of words (mostly 12 or 24) that we could connect with a lot more productively than other characters that aren't words (bits and figures as well as like). BIP39's function in introducing the use of mnemonic words https://socialbuzzmaster.com/story4113367/bip39-mnemonic-phrase-generator-the-2-minute-rule-for-seed-phrase-generator