2018.03.22 20:31:02 (976904099693244416) from Daniel J. Bernstein, replying to "Frédéric Grosshans (@fgrosshans)" (976898223183933441):
You're focused on how electrons rearrange themselves on the Faraday-cage boundary to interfere with a static measurement mechanism. You're inexplicably blind to the EM wave created by exactly this motion of electrons, a wave measurable by EM sensors on the other side.
2018.03.22 20:53:54 (976909857558269952) from Daniel J. Bernstein:
Suppose an attacker presents you with an audiotape of the music that your electrons are communicating. You average the audiotape over time and notice that the average is 0. Do you then insist that there's no music on the tape?
2018.03.22 18:04:28 (976867218410614785) from "Jonathan Oppenheim (@postquantum)":
I'm trying to return the discussion to the central thesis of your paper and my original tweet because life is short and this example is both tangential and far more complicated than the potential well I suggested (a point you ignore). Cancelling is what happens in the first...
2018.03.22 18:11:06 (976868884509876225) from "Jonathan Oppenheim (@postquantum)", replying to "Jonathan Oppenheim (@postquantum)" (976867218410614785):
...example I gave -- the charges in the cage create a field which when added to the field of the charges inside the cage sum to a constant (thus cancel). Your claim that Faraday cages "merely scramble information" is what I took issue with.
2018.03.22 18:16:31 (976870250187718656) from Daniel J. Bernstein, replying to "Jonathan Oppenheim (@postquantum)" (976868884509876225):
Do you understand the mathematical difference between a static field (a vector at each point in space) and a dynamic field (a vector at each point in space and each moment in time)? Motion of an electron inside the cage sends out an EM wave visible outside the cage.
2018.03.22 20:07:40 (976898223183933441) from "Frédéric Grosshans (@fgrosshans)":
“Motion of an electron inside the cage sends out an EM wave visible outside the cage” Of course not! Do you understand19th c physics? The EM wave displaces the electrons of the cage, which create an out of phase field which is opposite to the original field and cancels it outside