Well, not always. Every once in a while someone stumbles over something new, but I'm a scientist, it really needs to be verified before it becomes knowledge, so I would have to say you are correct.
It's the ability to take knowledge and apply it that leads to progress.
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!