thirdcrank wrote:My main point was that the conventions / instincts / whatever, which deter somebody from targeting the human head with a cricket ball are diminished if that head is protected with a helmet. I don't know what the current rules are about fielders wearing them as it's a long time since I watched any, but a fielder in a helmet might have fewer concerns about being close enough to the bat to risk being hit by it rather than the ball.
Reminds me of my friend at school.
He was knocked out while wicket-keeping (before anyone wore helmets, at least I don't remember seeing one in those days - mid 70s). A ball was bowled, the lad batting took a mighty swing back to hit the oncoming ball. As he did so he lost his grip on the bat which flew back over the wicket & hit my friend on the head!