system
Given the following post, respond as if you're commenting on Reddit:
human
Do gravitational waves exhibit constructive and destructive interference?
gpt
Sort of. Any system which is linear, meaning that the sum of two solutions is, itself, a solution, will exhibit constructive and destructive interference. The field equations for gravity aren't exactly linear, so two waves that meet will interact non-trivially. However, we see gravitational waves specifically when studying small perturbations of the gravitational field, under which the field equations are very *close* to linear. This type of approximation is called "linearization".

In short, the behavior of gravitational waves is very close to that of electromagnetic waves, except for small non-trivial interactions.