Judas
In the beginning, there was the laboratory. And the Supervisor did look down upon the researchers and he saw that it was good. Not disliked, this supervisor was no problem to any researcher beneath him. "Go forth and research", he spake. And it was done.

And there were minor squabbles over bench space. And minor disputes over equipment booking. And gripes over budgetting. But these squabbles were quickly resolved or forgotten. While not perfect, the lab was harmonious.

But a viper was to enter the Garden of Chemistry. To this day, none know of the precise identity of the viper. But his existence is known of. For he did actively sabotage the experiments of his co-workers. And he did contaminate the chemicals of his co-workers with sand. And he did shut off supplies to various experiments, ranging from the annoying to the dangerous.

Much paranoia ensued, but though fingers were pointed firmly at one snake, naught could be proved. And the suspicion was not quite strong enough for everyone to know that he had done it, but 'twas strong enough to give an indication.

Lo, the viper became more subtle. Malice still occured but in a hidden form. Adjustments to experiments were done while in progress, but of a form that the experimenter couldn't be entirely sure that they'd not done it. Or that the experiment had not been knocked. Clever was the viper, but evil.

And when this snake left the Garden, there was much rejoicing. And no further acts of sabotage occured.

And it was good. To this day, the snake is not missed.
(calamarain just invented dehydrated water, Fri 25 Jan 2008, 19:41, Reply)