But it's neither possible—nor desirable—to regulate away allrisk.
不过，借监管消灭所有风险，既不可能，也不可取。
2
Most of them are obvious: mandatory training and medical evaluations for passengers and crew, full disclosure of allrisk to passengers, and successful preflight testing.
其中大部分不言自明：针对乘客和机组的强制训练及医疗评估；须向乘客充分告知风险；预飞训练合格等。
3
If you have a group of different people with different proclivities and [everyone] shares, that's even more adaptive than all people being risk-takers or allrisk-averse.