JRutledge wrote... not sure what myth it perpetuates.
... That the inbounder can't move. Because he can, in a lot of different ways, and directions. Up (jump). Down (gravity after jumping). Left (to a degree). Right (to a degree). Forward (very limited). Backward (limited to time, and setting). Move both feet in place (the travel that isn't a travel). Etc. So why say that he can't move?
Why say something that is 100% wrong, dead wrong, when several other alternatives (see above posts, lots of posts, lots of alternatives) can be easily stated that are all 100% correct.