Meh, "cult" is mean and unnecessary. So people use it as a swiss army knife? Does it fail? bs=4M is useful will work fairly universally on various systems +/-10

Meh, "cult" is mean and unnecessary. So people use it as a swiss army knife? Does it fail? bs=4M is useful will work fairly universally on various systems +/-10% variance of time. It's always nice to know new ways but why insult people who like dd?