I like to fly with at least one other person around from start up, to shut down. I too have had a freind who recently stumbled and hit the throttle while trying to stand up. The plane lunged forward and took a sample taste of his leg to the tune of 60 some odd stitches. Another few inches he would have been singing soprano if you know what I mean. I myself have tried to reduce the number of fingers on my left hand, and was glad to have someone there to help me bandage it, it was not bad enough to require stitches. Another reason is with the run of crashes I have had lately it is nice to have a spare set of eyes to see where it went in.