The majority of people always thinks something is beyond limits, something that hasn't been done before can't be done.
A reaching 100 mph, 200 mph ... an airplane being used to transport people across the continent or the oceans ... space flights and walks on the moon ... . :11:
All done by people with the desire to push the limits beyond conventions and willing to take risks, including loosing their lifes. Many have, on earth, in the air or underwater. But without them there would be no progress.
People adding O2 into the cylinders were once hailed as dangerous, suicidle, banned from DEMA even showing their witchcraft. Today it has become pretty much accepted. Same with He mixes after that, and single stage regulators before that. And we don't even want to get to the real crazy ones diving into wrecks or caves. Maniacs to society, that bunch ... at least to the narrow minded. The ones who can't believe there is anything beyond the(ir) horizon. A news flash for you guys: The earth ain't flat!
To call Dave Shaw or his endeavor stupid or absurd say more about you than him.
The man had a dream and a vision, and he went for it. He knew the risks and unfortunately paid the price. Like many who pushed the limits of conventions before him. I admire them. I may not agree, their dreams and visions may be different than mine or beyond my imagination, but I admire them.
As for his wife, it's called unconditional love. Another all to rare ability I admire.