@Ron Porter: reading the article my thoughts ran exactly as your post (thank you for saving me the time to write it up myself ;))

@blandry: Please look a bit further than the length of your nose (a Dutch saying, but you probably get the gist of it), as Ron said EVERY idea ever conceived has been used for both good and evil (I believe you can even find ideas conceived for personal gain at the cost of others, then later put to good use by others. I just don't happen to have an example ready out of the top of my head). It doesn't even restrict to humans, opportunism is a universal mechanism of life.