Can you expect to walk to your fridge without incident? generally yes.
But if someone tells your wife that the floor isn't safe and she tells you to go ahead anyway, does this change your argument ?
Can you expect to drive 50 miles without incident? generally yes but quite often (this mornings commute) no.
If the radio news says road conditions are dangerous and you go ahead anyway, does this change your argument ?
Can you expect to achieve orbit, the shuttle must accelerate from zero to a speed of almost 28,968 kilometers per hour (18,000 miles per hour), a speed nine times as fast as the average rifle bullet. without incident ever? no you cannot.
When your technical teams break out of normal behavior to clamor for delay to for technical reasons indicating why failure risk is unusually higher than normal or when points of failure are identified, but not mitigated for whatever bureaucratic reasons then you have failed. Failed. FAILED. People died, not because of known risks taken, but by negligence of their superiors. There is no forgiveness, no release from this kind of failure.