>Do you know how easy it is to be added on to someone else's research when you're popular? May I ask what you know about scientific publication and how it works?

Why are you asking these stupid questions of /u/tzaeru, when I already showed you that Sagan had many top-notch, original research publications that were both first-authored and published before he was famous? He wasn't just getting added onto somebody else's work. I don't see what you're trying to accomplish with this bullshit.