Technically, they do "talk" to each other: "the two pendulums would exert a force on each other through minute vibrations in the wall". I would argue humans do the same. And not just "the" powerful either, everybody does. Sometimes for fun, sometimes for gain, sometimes just to be social, but hardly ever with a clearly formulated "plan", or meetings in dimly lit rooms. That's just not necessary when you already noticed you're in agreement with someone about crucial things, simply because you're both doing them.
Also, it's perfectly normal for people to "conspire" to do something without any of them even reflecting on what they're doing individually, much less as a group. It's possible to work in unison towards a common goal without even being consciously aware of that. Kinda like a flock of birds, or pendulum clocks :P
http://www.math.kyushu-u.ac.jp/eng/pages/laboratory04.html
Technically, they do "talk" to each other: "the two pendulums would exert a force on each other through minute vibrations in the wall". I would argue humans do the same. And not just "the" powerful either, everybody does. Sometimes for fun, sometimes for gain, sometimes just to be social, but hardly ever with a clearly formulated "plan", or meetings in dimly lit rooms. That's just not necessary when you already noticed you're in agreement with someone about crucial things, simply because you're both doing them.
Also, it's perfectly normal for people to "conspire" to do something without any of them even reflecting on what they're doing individually, much less as a group. It's possible to work in unison towards a common goal without even being consciously aware of that. Kinda like a flock of birds, or pendulum clocks :P