The fact that the Vanderbilt device uses the patient's muscles and only kicks in the motors when they become fatigued is great. Still, a little irrational voic

The fact that the Vanderbilt device uses the patient's muscles and only kicks in the motors when they become fatigued is great. Still, a little irrational voice inside is screaming that for something costing over $80,000 this should have a mind machine interface and not something pulled out of a Segway (the Vanderbilt is controlled by leaning while on crutches) or a D-pad (the Ekso and ReWalk). Hopefully prices would come down with scale. The Cyberdyne HAL is around $20,000.