TAI is ‘a second always takes the same amount of time, and the number of seconds is always increasing’. Which is really useful in the real world when tracking/counting events every second all the time.
Because leap seconds cause weird gaps or overlaps (depending on how they are happening).
This doesn’t matter for pretty much anyone who doesn’t track/log/act every second all the time in a way where if a second ‘disappears’ or happens twice or takes longer on one day than on another it’s noticeable.
When monitoring or tracking large scale systems, it’s a really irritating problem, which is why TAI is nice and exists in computer land. Also why it’s nice for many scientist types.
For everyone else, something like UTC layered on top is more than good enough. Leap seconds are fine enough there. Same with most timezones, and PDT/PST, etc.
Because leap seconds cause weird gaps or overlaps (depending on how they are happening).
This doesn’t matter for pretty much anyone who doesn’t track/log/act every second all the time in a way where if a second ‘disappears’ or happens twice or takes longer on one day than on another it’s noticeable.
When monitoring or tracking large scale systems, it’s a really irritating problem, which is why TAI is nice and exists in computer land. Also why it’s nice for many scientist types.
For everyone else, something like UTC layered on top is more than good enough. Leap seconds are fine enough there. Same with most timezones, and PDT/PST, etc.