So 1000 liters [of helium] lifts a little over a kilogram, and a 70kg human needs around 70,000 litres: very roughly 10,000 normal balloons [linky]
(let’see… 1000 liters/cubic_meter. so that would be about a sphere diameter of 5.1 meters unless my abacus needs recharging)
somehow strapped in prone that-a-way it just seems like particularly vulnerable way to witness one’s wind-blown lacerating demise and/or unavoidable descent into a field of cactus. (“plus looks like a guaranteed stiff neck”)
