On significance, I'm not so interested in people remembering me in 200 years as being able to look back before I die and know that I did something really import

On significance, I'm not so interested in people remembering me in 200 years as being able to look back before I die and know that I did something really important. (What that important thing is, I don't know yet.) Like neilk says, fame and impact in many cases don't correlate. And that's okay. The people that made TCP/IP are/were probably satisfied with what they'd accomplished, and beyond that, who cares.