solution to not flying into the wall at a million miles per hour:<br>stop every 1 mile or so and then continue,(reply>), There's a fabulous old sci fi book "The Stars My Destination" by Alfred Bester that really nails the changes occurring in a society where teleporting is common.  All of that, and a great story too.,(reply>), @Knight Loltrec throw a parachute into the portal until it reaches terminal velocity with you, put it on, make another portal, dont die,(reply>), Teleport high into the air and let air friction slow you down.,(reply>), I feel like we can up that to like, 150 miles and still be fairly safe,(reply>), Buildings aren't 1 mile apart.