I disagree completely, if you follow the listed sources, they lead to good research done on snakes involving their perception. Just because people "can" change things on wikipedia, doesn't mean you can immediately discount it as an extremely useful source. Most rogue alterations are detected very quickly, and many users are quick to delete un-cited information. You can think what you want about the facts, but please do not go against what I'm saying, "just because." If you want to prove something wrong go to wikipedia, look up the sources, and go do your own research. But based on reading the research already done, and being a molecular and cellular biology major for the last 3 years, I find the research extremely plausible. Here are some more.