Just to further clarify, by work sample you do NOT mean an example of previously produced work? This still seems fickle: my dozen years of work output (for exa

Just to further clarify, by work sample you do NOT mean an example of previously produced work? This still seems fickle: my dozen years of work output (for example, building and running a site with perfect uptime for millions of users) is not as valid an indicator of my future performance as how I happen to score on some arbitrary timed test?