To me that seems like not saying hi, rather a device to shift the risk of engaging off of you. Don't be scared. Just say a few banal words to people you don't k

To me that seems like not saying hi, rather a device to shift the risk of engaging off of you. Don't be scared. Just say a few banal words to people you don't know every day and gauge their reaction, start a conversation if you like and they seem to be up for it.