Maximum breaks have become more common but making one, particularly on television, is still a fine achievement.
There have now been 67 in professional competition. When you consider the many thousands of frames that have been played, this still isn't all that much.
John Spencer would have made the first televised 147 in the 1979 International were in not for the fact the TV cameramen were in a nearby McDonalds at the time enjoying a meal break.
(As it transpired, the pockets were not ratified to tournament templates in any case.)
Spencer was Steve Davis's opponent at the 1982 Classic when Davis made the first TV 147 (and still one of the best).
Cliff Thorburn made the first of - so far - eight maxiums at the Crucible in 1983.
Kirk Stevens completed one at the Wembley Masters in 1984.
James Wattana made a maximum at the 1992 British Open shortly after hearing his father had been shot in Thailand.
Ronnie O'Sullivan's 147 in five minutes, 20 seconds at the 1997 World Championship remains the greatest exhibition of pure snooker skill I have ever seen.
There were eight maximums in the 1980s, 26 in the 1990s and 33 this decade with a year left to run.
Congratulations to Ding on a great personal moment.
After the events of yesterday it was also exactly what the tournament - and snooker itself - needed.