Carmine Castiglia wrote:
A good rule of thumb would be: if you can see it at all, you are too close
for anything but a quick glance.

So how do they get away with welding outdoors where the public may be
exposed?

I've detoured to walk down alternate streets, blocked the view with my
hand, etc - but I know it's generally not something I should be looking
at. Joe Average, (or worse Joey Average, jr) doesn't.