Sort:  

It would be cheap to mine. A node with mira is like 8-40 dollars to run.

Also proof of brain is easier to abuse. The smt's would still be pob. Also as you said no one want's to mine. Pob is mining, and they could still mine by earning SMT's and trading them for steem.

PoB is a form of human computation where the brain is the mining device.

Coin Marketplace

STEEM 0.27
TRX 0.12
JST 0.032
BTC 68055.12
ETH 3813.21
USDT 1.00
SBD 3.72