It sounds like what you're proposing is turning the first week(s) into part of the recruitment process (a probation period basically). That approach has its own

It sounds like what you're proposing is turning the first week(s) into part of the recruitment process (a probation period basically). That approach has its own issue, but I interpreted Sam's point differently. The problem isn't about recruiting process not sufficient to determine whether an employee is good or bad, but rather about knowingly hire a mediocre employee, for one reason or another.