It's a different competency. The NSA tries to monitor all communication. If it fails to monitor 10% of the communication, or 5%, or 1%, it is still problemati

It's a different competency. The NSA tries to monitor all communication. If it fails to monitor 10% of the communication, or 5%, or 1%, it is still problematic that it monitors the other 90-99%. If it retains control of the information it has captured at a 90-99% efficacy rate, on the other hand, that still basically means that it leaks information like a sieve.