We are human, we make mistakes
Even with a perfect plan, imperfect humans will make mistakes. We will think the rules don’t apply to us. We will think the risks are less than they actually are.
There is no such thing as infallible or unsinkable
We as humans produce nothing that cannot be destroyed. We should have learned this from the Titanic, the Exxon Valdez, and Chernobyl.
The Deepwater Horizon disaster could have been much worse
Without skimmers and all kinds of technological help, the disaster could have been much, much worse. Thank God for the lessons of the past.