Conduct a thorough, critical analysis of the article and its points. Support your analysis with critical thinking that clearly demonstrates an informed and substantiated opinion. Your critique should address, at a minimum, the following points.

Briefly summarize the articles position on the causation of the spill.
What role did policy and legalities play in the disaster?
Does OPA 90 effectively ensure the industrys adherence to best safety practices?
How can the human factor be mitigated in disasters such as the Deepwater Horizon spill?