Most of you are familiar with the light-side of science; designing empirical experiments, discovering new information, presenting data and crafting theories. But that is only half of the picture. The often ignored dark-side of science; correcting flawed experiments, criticizing inappropriate data analysis, and tearing down the ideas of fellow scientists. Yes, the peer-review process is a harsh mistress but is equally important to the scientific process (some might argue more so) as its light-sided counterparts. As such, developing a thick-skin to the criticism of others, is a vital step for any developing scientist.