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> Weeds are getting harder to kill as herbicide-resistant varieties survive

Surely it won't take long for camera-resistant weeds to evolve? They will learn to avoid detection via camoflage and mimicry. Still, I guess it's a better problem to have than a chemical arms race.

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That's already happened - Rye is an example of Vavilovian mimicry[1][2], a crop that evolved to be hard for humans to distinguish from weeds. Thankfully, the selection pressure is also to be tasty and useful, as burning a field to prevent it's weeds from spreading remains a viable solution.

[1] https://www.indefenseofplants.com/blog/2016/2/2/the-accident... [2] https://en.m.wikipedia.org/wiki/Vavilovian_mimicry

Strike that, reverse it - A weed that evolved to be hard to distinguish from crops.

I bet we can update the laser targeting firmware faster than natural selection can update weeds. I would also guess we can take some inspiration from hummingbirds and use the plant's IR signature as part of the targeting selection criteria, too

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