You are reading a single comment by @gbj_tester and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
@gbj_tester
Same way you'd know if you put the effort in; read. There's a wealth of material freely available about how humans deal (badly, from a mathematical point of view) with risk.