[mechanical_bear]

Can it really be considered a pendulum if it’s stochastic?

[rich_sasha]

The Ornstein-Uhlenbeck process, for example [1], is fully stochastic, but drifts back towards an equilibrium.

[1] https://en.wikipedia.org/wiki/Ornstein%E2%80%93Uhlenbeck_pro...

[heisenzombie]

https://scienceworld.wolfram.com/physics/DoublePendulum.html