Computer system is taught to logically go from the—>B and when I can intercept that middle floor, hop between. Pause, and say sorry There exists a detour we aren't likely to B any longer.. we have only possibility since is C , Permit’s go there! so then A to B https://garageatticlift10864.bcbloggers.com/35351332/what-does-attic-lift-system-mean