Assume you are keeping your new bike clean to get fast times. This is my theory and I scientifically tested the hypothesis this morning when riding the MTB at Stromlo - we had a thunderstorms overnight and the further I rode the bike the dirtier it got and the riding got slower. So the hypotheses that a cleaner bike is a faster bike is proven - I did not know science was so easy compared to economics. Of course if you need to keep the bike dirty so your riding partners can keep up with you then fair enough.
I'll add it to the bike fairy chores.
Making it dirty, or making it clean?