As in every research organization in this industry there are those who are smarter than everyone else and a few bad apples have gotten through the filtering process. The structure has been a bit loose but is tightening up because that's how optimization works! Finally, the biggest con is not with Plexium it's with ungrateful people in general. Most of the reviews I see here are from folks who are complainers. They were given a shot and thought they could cool breeze because no one was micromanaging. Ive been at a lot of biotech companies and I can honestly say. I love Plexium