Replies to post #139029 on World Surveillance Group Inc (fka WSGI)

[JackedOnCaffeine]

Using your logic, then Hydrogen is 100% safe as well. It's only what man does with it that makes it dangerous, like exposing it to flame or a spark.

I suppose that man working at the top of the room where the Helium leak exists is 100% safe too... as long as he holds his breath. Breathing, after all, is something man does with the air in the room. That's like saying there can be no displacement of breathable Oxygen as long as the man chooses not to inhale. Yes, 100% safe, until the man passes out and dies from lack of Oxygen.

Nothing is 100% safe. The water we drink can drown us, infect us with diseases or parasites, or poison us if we drink too much of it. The only way something can be close to 100% safe is if it remains isolated from us and we never use it for any purpose. That's my point. Using Helium in some application such as leak testing or as a lift gas in a UAV is not without its own risks.