I did not accuse any scientists/engineers who are actively trying to solve the leak now of doing anything unethical. I do not and cannot know for sure the details of exactly which person did what, when -- none of us can, and much will be hearsay. However, I thought it was clear from my post that I think it appears more of a lack of preparation before the accident, and/or a lack of will after the accident began, at a leadership level. At the level of an individual engineer, he may want to do the smart/cautious thing, but if he is overruled by executives or accountants, etc. then his intent has no effect.
I did not completely dismiss the challenges of depth and pressure. I even cited them specifically. But if you focus on the core goal we have right now, it's that there is oil flowing into water at a certain location. Just stop that flow and/or contain it to a finite controlled volume, and prevent it from spreading out into a much larger area. It doesn't matter exactly how quickly you stop/contain it, and it doesn't matter exactly the volume of the containment zone, or even whether you use 1 technique or 3, together or in sequence, just make it happen and do it quickly. And they fundamentally know how to put and operate equipment down there, and lay pipes, and draw oil up to the surface for further processing and transport. What BP needs to do is basically just a variant on that same fundamental task. Again: there is some fluid in another fluid. Bad stuff getting into some good stuff. Keep it from spreading in an uncontrolled manner. That is not fundamentally impossible, even at 5000 feet depth. Walls. Pipes. Suction. Seals. Tanks. Valves. This is all well understood technology and can be put together in a variety of ways.
Also, all your claims about how lay people (such as myself, you imply) are inherently unqualified to talk about this subject would apply equally well to you. However, in reality, I would argue that a reasonably intelligent and educated person can come up with a decent analysis and decent solution ideas, comparable to that of professionals within a field, given that the constraints that that field operates within are sufficiently knowable and understandable by said lay person. In essence, Mother Nature doesn't know or care what degree you have.
You and I may have differences in how solvable or preventable we perceive this situation to be, but frankly you keep going overboard and saying rude things. Imagine you are sitting across a table from me, speaking to my face, and adjust your words accordingly. Free speech is awesome. But with it should come the sense of responsibility to not be rude to whom you are speaking.