Swimming's not a sport that needs more events but Cam McEvoy's call to World Aquatics to add 4x50 relays to the event program raises a few questions, regardless of any tongue-in-cheekiness likely to be at play in the social-media posts of the fastest man who ever swam down one length of an Olympic pool.

The call, shown in our main imagine, was posted on McEvoy's Instagram after he set a Games-recordb 20.97 to become the first man to race inside 21sec unaided, not once, but now twice, at the helm of a Dolphin podium sweep with Flynn Southam and Jamie Jack, AKA "The Holy Trinity Of freestyle dashers", as the Olympic champion puts it.

So, 4x50 relays? They're already part of short-course events, European Championships a prime example. And the 50m stroke events will be added to the Olympic program at LA2028 40 years after freestyle had its first dash in the pool at the Games.

The big question is: could the program stand more additions? No. Next question: if you add 4x50 free, should you not add 4x50 on every stroke? Next question: what about a 4x100 on every stroke? Next question: Which events would you drop to fit the new ones in? Next question: What would all that fiddling about do for the thread of history? Next question: are there better ways to try and make swimming a better show and more accessible to the wider audience, as well as existing fans, media and more?

On that last question, I give my first 'yes'. The 50m stroke events in LA will doubtless make for a spectacular show in LA come 2028, but was the case for "sprint day" at the Olympics considered/explored? It's a nine-day program, so an old-style 'rest day' in the pool, might be just the break in the storm of sameness in the pool: Day 5: Sprint day, presented entirely differently than other events, a one-day spectacle that can win new audiences for the sport on the one occasion where swimming has the biggest shop-window opportunity to do so.

And then, we spill to questions such as: semi-finals for anything over 50, or over 100? Past their sell-by date? Would not not make more sense to bring back B finals, and add incentives to anyone in a B final who beats the wining time: they can't have the gold, but what other mechanisms could help spice up the show?

In that context: - bravo to Cam for the question - it's fun and it gets the conversation rolling, if swimming opens itself up to that kind of interaction, the passioned plea a gateway to the debate and discussion needed on the matter of what works and what no longer does, and what might replace it without strangling the thread of history to death.

By that, I mean this: Wimbledon, and many other top sports events - set aside the tweaks and developments in tennis down the decades, and, essentially, you find a sport that has an unbroken thread of history, to which every passing champion and generation belong, no asterisks required.

Try and compare eras in swimming these days and you need a ton of notes and asterisks. The issue is not that the wider audience is oblivious, but that it doesn't care. Why not, and how and with what do you send out invitations to "come on in, the water's lovely, fast, furious, choppy and awash with personalities if only they were visible beyond their backyard pool'.

Discuss.

Ok, on that note, here's a snap shot from Day 4 heats here at Tollcross International... take a look at the women's 400IM, where depth is an alien concept.

Day 4 Heats - The Qualifiers