> Everything on a Falcon or a Dragon is public domain 60s technology besides the code and guidance hardware What a nice way to belittle the enormous significan

> Everything on a Falcon or a Dragon is public domain 60s technology besides the code and guidance hardware What a nice way to belittle the enormous significance of their achievements. Reliability, total mass to LEO/GEO/TLI/Whatever, and $/kg in each of these cases, coupled with an amazing launch cadence, are where you can see the magnitude of the progress they've enabled. Whether you do it with expendable or reusable vehicles, burning RP-1, methane or a custom mixture of concentrated Jack Daniels and dog hair, doesn't really matter. They do it reliably, often and amazingly cheaply. SLS does none of that, and neither do any of the other launch systems. Also if you value their improvements so little over "public domain 60s technology", how come nobody else did it in 50 years? Come on, Elon is immensely questionable, but SpaceX is awesome (thanks in no small part to Gwynne Shotwell!) and SLS is... not, but at least it finally launched and didn't even blow up, so let's celebrate that instead of turning this into an opportunity to disparage them.