experiments on experiments in science

At www.newyorker.com/magazine/2010/12/13/the-truth-wears-off …. I stumbled across this article as it was quoted on the Internet in a comments section. It is very illuminating. How science seems to work – all too often. It is the underlying human dimension. Not a purposeful slew of the data but a human failing, a small but significant factor when replicating experiments. Experiments may produce unusual results – even freak results. People can get very excited – but why do some experiments produce such outliers? Subsequent replication very often finds it difficult to reproduce the same freak result. What is going on?