{{WP:Good article reassessment/SpaceX reusable launch system development program/1}}
== Second stage as spaceship ==
The "Second-stage reuse" section of the article currently states an, "integrated second-stage-with-spaceship design [...] has not been commonly used in previous launch vehicles." But see [[RM-81 Agena]]. The final launch was in 1987; 365 were flown. Does that flight history somehow fail to qualify Agena as having been "commonly used?" ([[User:Sdsds|sdsds]] - ''[[User talk:Sdsds|talk]]'') 06:15, 22 May 2018 (UTC)
:Just saw this question [[User:Sdsds|sdsds]]. Is a good one. I had time only to skim that Wikipedia article prose, but not go after the sources. Do you think there is a good source anywhere that does a solid job explicating just how the Agena might be thought to have been an "integrated second-stage-with-spaceship design"? Otherwise, it seems a bit like Agena, and maybe even a few of the Chinese second stages being used today, are more "integrated second-stage-with-attached satellite" designs. But even that might be worth mentioning to improve this article if we could find sources that are descriptive of some sort of integrated-second-stage designs in contrast to the BFR design integrated reusable spaceship designs. Cheers. [[User:N2e|N2e]] ([[User talk:N2e|talk]]) 14:20, 8 November 2018 (UTC)
::Ah, thanks [[User:N2e|N2e]] your thinking on this is good. Musk (the cited source) pretty clearly knows "spaceship" can refer to both a human-carrying and a satellite- or probe-carrying vehicle, but he might mean us in this context to be thinking of human-carrying vehicles where (to my knowledge) nothing quite like what's envisioned for BFS was ever "commonly used." (Or ever used at all?)
::I'm sure there are sources we could cite describing Agena (and the others you mention) as being integrated second-stage and payload vehicles but in the context of Musk's assertion, mentioning that what he said might be misconstrued would probably be out of place! ([[User:Sdsds|sdsds]] - ''[[User talk:Sdsds|talk]]'') 02:20, 31 August 2019 (UTC)
