It's not always that we have ideas, but that ideas have us ;) WE should verify our claims, but we can still have beliefs that can't be verified.
There's a reason airplanes have required inspections. Having people's lives depend on machinery is a responsibility of the owner of the machinery to upkeep.
I agree, we should all be free to have our beliefs and make the choices that we think will serve our interests the best. I do agree with Clifford, in as much as it is our own responsibility to investigate our beliefs to assure that they are sound. If someone invites you to go for a ride in his car and before you get in it, you see that all of the tires are wobbly, then you probably shouldn't go for that ride in this particular car. You are right, it is the responsibility of the owner for upkeeping his machinery, but it also the responsibility of the user, based on his inspection of the machinery, to use it or not. But you are right, at some point we have to stop inspecting and start using. Nothing is 100% safe. Thanks for commenting!!