I can understand this is a very strong belief that you hold, but it's the same kind of story that was used to link vaccines and autism. In the middle ages, simi

I can understand this is a very strong belief that you hold, but it's the same kind of story that was used to link vaccines and autism. In the middle ages, similar appearingly non-random connections were used to convict people of witchcraft. Lots of people get cancer. In many cases, without having any obvious risk factors. Non-smokers still get lung cancer, for example. Human beings have an amazing ability to notice correlations, to make connections. It's an adaptation that has been hugely advantageous to us as a species, but sometimes it causes us to see correlation where the underlying evidence is not very good. That's not to say that Roundup didn't give your dad cancer. Maybe it did, but science requires more evidence than anecdotes.