Although a few scientist do fiddle results for various reasons (some of them nothing to to with faking the results), the vast majority do not. Most of the bad science is the result of poor experimental design, poor monitoring and biases in instrument readings. Some scientists use the statistical analysis which gives the best (not the most accurate) results, ie. the results they expected according to their preconceptions. This bad science is usually weeded out long before the research is published. It is possible that the monkey experiment video is fraudulent and /or the video is selective and only shows the best bits. If you are really concerned you should look up the research on this subject that has been peer reviewed and published. I'm sure that someone on AB can point you in the right direction.