Why do you think we will "probably" go extinct? That depends on creating risky knowledge faster than we create knowledge of how to mitigate those risks. Which in general seems unlikely, given that we are aware of the issue and can aim our progress in the right direction as necessary.
Well, 'risky' knowledge seems generally easier to research than the knowledge to contain it. See the atomic bomb vs. the missile shield, over 60 years later. It's easier to destroy than to create.
Also, humanity isn't exactly united in aiming our progress in the right direction. However, I don't think we'll go extinct any time soon (that would take nothing less than a very big asteroid).
but we didn't and still don't necessarily need a missile shield to prevent the atomic bomb from destroying us. we had, and used, diplomacy, locked weapons silos, etc
