I read that too.
As a user of 4% and NEXt%, maybe I’m biased. But I just don’t get the technical doping analogy. Do the shoes make you go faster? Yes, my belief is they do. But then do any shoe make me go faster than running barefoot? Yes, true as well.
Has every shoe company in existence released a new model each year, with the claims that this shoe is better than the previous years model for X,Y,Z reason, and will make you go faster / be more comfortable / suffer less fatigue? Yes.
Is the social media generation just giving a platform for people to be aware of the issue, and to moan with an audience, which was not the case for technical innovations in the past. I believe so.
If these shoes were £100, would most people be moaning? I don’t believe so.
Do I have any sympathy for non-Nike athletes? No - you have decided to take a financial payment to wear a certain brand of shoe. If you don’t like that shoe, don’t sign the contract. It’s no different from Will Clarke’s recent interview where he said he hated the saddle he was forced to use, and his bike wasn’t as good as other superbikes, but that was the “cost” of the financial gain of sponsorship. The rest of the market is now pretty much there with comparable offerings, so this issue largely goes away.
On the flip side, do I have a problem with setting limits or regulations for shoe construction? No. But if the governing bodies don’t do so, then you can’t blame the shoe companies for innovating. If they have a choice of a incremental improvement of an existing model, or to produce something that changes the landscape, the latter is the commercially obvious thing to do. It’s also approaching 3 years since Breaking2. There has been ample time to react to the original vaporfly elite if there were concerns, well before the mass produced 4% became readily available.
If I were asked to draw a line, I think the existing shoes should be ok. They’re just using tech that was in existence before, in a novel way. It’s just a carbon plate and some foam - both of which have been used with varying success for ages. The alphalfy, from seeing the patent application docs, seems a different animal. That’s seriously over engineered, with multiple layers of carbon, foam, carbon, foam, etc and the air shocks. The stack height is also overly-extreme.