Yes, it turns out you can find meaningful information. etiam provided this https://arxiv.org/pdf/1312.6034.pdf https://arxiv.org/pdf/1312.6034.pdf The main issu

Yes, it turns out you can find meaningful information. etiam provided this https://arxiv.org/pdf/1312.6034.pdf https://arxiv.org/pdf/1312.6034.pdf The main issue is making sure what you are looking for is actually what the network is doing. You have to correctly interpret and visualize a jumble of numbers, which usually requires a hypothesis about how it worked in the first place. But assuming both go well you can gain meaningful information.