Applied 
Four riders come to a river in the night. There is a narrow bridge, and it can only hold 2 people at a time. They have one dyno bike and, because it’s night, the bike has to be used when crossing the bridge. Person A can cross the bridge in 1 minute cos 700c X 28, B in 2 minutes cos 650 2.1, C in 5 minutes cos fat beik, and D in 8 minutes cos 4 panniers. Can they all get across the bridge if rider with the dyno is determined to drop them all
Which one has the dyno
Fat biek
We need to know whose perceived wattage was highest.
Darn, picked up some Conti Grand Prix in 28c to replace my rotting GP4000 28s. For one, skinwall tires look really ugly on black rim brake wheels (the black/tan/silver/black is a bit much). But when Conti updated their molds apparently they changed the reference rim for measuring width, the old tires were measured on 15mm wide rims and the new are on 17 or 19? So my new 28s actually measure 25.5.
Should have gone with black in 30c