We wouldn't know everything but we are living an hour at a time and have more questions, ideas than the people who are in this do in the equivalent day. Why would it take two (going on three) days for anyone to figure out how big the thing is and why would it be some kid doing it? Why assume it is enclosed? Why not see if it ends somewhere? Just accept that it is a complete dome and not a partial shield? Why? The people in that town are fools. Normal people try to figure out the extent of the "damage" from day one.