Each of us can think of countless example like this — where tremendous sweat, resources, and good faith have gone into some important endeavor, only to have it all foiled by neglecting that last little detail. The first 99% of effort gets destroyed by the lack of the last 1% of it. For example, I've seen more charity events than I can count at which expensive banners get produced but no one has thought about the last step — how they're going to be rigged. People think they'll figure it out when they get there. But 40 mile-an-hour winds require a little more thought than that. The work of a branding company, a graphic design firm, and a banner production company are all thwarted because the banner can't be hung.
via blogs.hbr.org
Thanks and a hat tip to Tim Oreilly