Not sure what you mean - I have been touched by male and female colleagues numerous times. Not once was it sexual, it was just people being people. Are you suggesting that they ask my permission every time before touching my arm or shoulder or slapping me on the back?
Can you imagine the following scene:
"Gee John, you did a great job there, I would like to shake your hand, or even pat your back (only near the shoulder mind you and no lower than a line formed by the bottom of your shoulder blades). Do you think that would be permissible? I want to reassure you that this touch will not be sexual in any way."
A handshake is a good example: when you go give one to someone, you don't actually touch them, you extend your hand and wait for their explicit (if non-verbal) consent.
As for patting backs, do avoid doing so. Many of us don't like it even if it's totally non-sexual.
> "As for patting backs, do avoid doing so. Many of us don't like it even if it's totally non-sexual."
...and many of us do like being patted on the back (non-condescending of course).
Perhaps in the future, we will all have to work in an environment where no touching of any sort is allowed, ever, but I can't help thinking that would be a step backwards.
Can you imagine the following scene:
"Gee John, you did a great job there, I would like to shake your hand, or even pat your back (only near the shoulder mind you and no lower than a line formed by the bottom of your shoulder blades). Do you think that would be permissible? I want to reassure you that this touch will not be sexual in any way."