Unreliable life events
Unreliable airspeed events are a bit like phishing events for non-pilots:
If you receive an email requesting you to provide your bank account numbers and secret codes - nothing happens if you just do not reply, but all hell breaks loose (financially) if you are stupid enough to provide all the requested information.
With airspeeds indications going unreliable, nothing happens if you just keep the attitude and thrust as they were hours on end previously - however, if you react solely to the erroneous airspeed, all hell breaks loose, physically this time.
How do you distinguish between true and false? As a daily internet user, that should be as common as fish and chips in case of phishing attempts. As a pilot, same in case of unreliable airspeed.