This article highlights the mission capabilities controversey over in situ servicing vs fire and forget.

"David Leckrone, the senior project scientist for the Hubble, said NASA's new strategy for the post-space shuttle era does not include servicing scientific instruments in space, and he fears that vast amounts of accumulated knowledge and technical expertise will quickly vanish.

Leckrone, who plans to retire in October, is not backing down, and Friday he reiterated his case.

"I feel like NASA's doing what it's done before -- it comes up with a great capability and, for political or budgetary reasons or whatever, it abandons it," Leckrone told The Post. He added, "I've been besieged by NASA people thanking me for saying what they think needed to be said."

The dispute has created a rift between Leckrone and the head of space science at NASA, Edward Weiler."

What's sobering is that the Shuttle replacement Orion has NO payload bay, No arm and any EVA requires the entire cabin to be de-pressurized. Back to 1962 & Gemini on steroids.