That 10 % includes people Not looking for work but canSo it doesn ' t count in the number of job hunters so it ' s back to the 5 % then . <| sep |> Well , it ' s day somewhere in the world , so technically he is right . <| sep |> If only we could get politics to be too scientific . <| sep |> No it does not . Just some food and a fire . <| sep |> A trim command known as TRIM in the ATA command set , and UNMAP in the SCSI command set allows an operating system to inform a solidstate drive SSD which blocks of data are no longer considered in use and can be wiped internally . Trim was introduced soon after SSDs were introduced . Because lowlevel operation of SSDs differs significantly from hard drives , the typical way in which operating systems handle operations like deletes and formats resulted in unanticipated progressive performance degradation of write operations on SSDs . Trimming enables the SSD to more efficiently handle garbage collection , which would otherwise slow future write operations to the involved blocks . Although tools to reset some drives to a fresh state were already available before the introduction of trimming , they also delete all data on the drive , which makes them impractical to use for ongoing optimization . By 2014 , many SSDs had internal background garbage collection mechanisms that worked independently of trimming . Although this successfully maintained their performance even under operating systems that did not support trim , it had the associated drawbacks of increased write amplification and wear of the flash cells . Source wikipedia