[OrangeBlossomBaby]

First of all - Mark doesn't have a "severe" medical or mental condition. I don't know if he's autistic or not, I just know he's on the spectrum somewhere, and he's high functioning.

Second - his shrieks are not random. He does it to the beat of the music at certain intervals, and only during certain songs, in certain spots of the songs. Usually it's not a shriek, it's a count: "THREE TWO ONE!".

Third - He is intelligent, able to hold his own in a conversation, waxes poetic on occasion, is a spiritual person, gentle and seems to be incapable of expressing anger toward anyone. I haven't tested that but I've watched a few people play the passive-aggressive "Oh look Marge, it's THAT GUY AGAIN" game in close proximity to him and he just accepts it with a gracious smile. There are some people here who would take those quips as challenges and become confrontational about it but he never takes the bait, so far as I've experienced.

Fourth - he's not inconspicuous, I don't know why BrianL99 came up with that claim that anyone here was saying he is inconspicuous. He's clearly conspicuous - he's a tall pale bald white guy wearing a long-sleeved Henley shirt, who smells like a Deadhead, sweating like a dyslexic on Countdown, wielding a conductor's baton and poking it up into the sky or spinning and dancing around the dance area.

He's only not innocuous to people who are easily offended by anyone who isn't perfect.