the.com/reliability
the unsexy superpower that turns talent into trust and chaos into a sure thing
means The quality of consistently performing as expected, so that people can depend on you or something to deliver every time.
from From 'rely' plus '-ability.' 'Rely' came into English in the late medieval period from Old French 'relier,' to bind together or fasten, which traces back to Latin 'religare' — 're-' (back) plus 'ligare' (to bind), the same root that ties up 'ligament' and possibly 'religion.' So buried in the word is a literal image of binding fast: when you rely on something, you're tying yourself to it. The abstract noun 'reliability' is a much later formation, an 18th- or 19th-century coinage that bolted the '-ability' suffix on to make dependability measurable.
- engineering metric
- measured as MTBF, mean time between failures
- five nines
- 99.999% uptime allows just 5 minutes downtime yearly
- psychology
- showing up beats brilliance for long-term trust
- statistics
- a test can be reliable yet completely invalid
- redundancy
- systems get reliable by expecting parts to fail
toyota production system — toyota vehicles have the highest dependability ratings; 2023 j.d. power study ranked toyota #1 in reliability
swiss railways — sbb operates with 99.5% punctuality; trains run on schedule in switzerland more consistently than any other major rail system
ups delivery network — ups delivers 24 million packages daily with 99.1% on-time delivery rate across 220+ countries