There’s a lot of construction work gone into the high-tech sport venues that are now littering the country. Sometimes it’s the smallest things that matter. These screws are some of the ‘missing masses’, as mundane and as important as can be (Latour, 1992).

(source: cyclingweekly.co.uk via Ewen Speed)

On your hands and knees: your mate lines up the screws, as straight as can be, and you drive them right in. All the way. On any cyclist’s list of the things that matter, avoiding a puncture is up at the top.

Reference

‘Where Are the Missing Masses? The Sociology of a Few Mundane Artifacts’ in Wiebe E. Bijker and John Law, eds., Shaping Technology/Building Society: Studies in Sociotechnical Change Cambridge, Mass.: MIT Press, 1992, pp. 225–258