(For some reasons, my original message were not posted. So here it is in a new subject to discuss.)
It was with some reservations that I read these article. The main one is any acknowledgment of BLE. As you know, a BLE can be changing the entire course of a process while not being detectable until we have been seen too much time passed. If such a thing does make an occurrence, then all previous thoughts should be restarted. It is best then to preconsider all potential BLE, but this is almost impossible to sustain!
