Performance is all in the head

No dude, just no. Even the athletes themselves admit it's the shoes. But why don't you use your superior mindset and will yourself to a 3:29.

run

and the other half is mental.

There's no need for the overstatement. You have to have a certain amount of talent, you have to be at a certain point in your fitness, and you need the mentality to compete.

To say "it's all in your head" would mean that anyone with the right mentality could go run X time and we all know this to be completely false.

Exactly, I just focus mentally and beat Jakob.

I think this is true, though not quite to your extent lol. In the 2010s, there were literally 2 12:4x races. Paris 2012 (6 guys 12:46-12:49) and Bruxelles 2018 (12:43/12:45/12:46). Bruxelles 2018 was actually the only race in 2018 where anyone broke 13. The reason there weren't more fast times was just because no one was willing to push the pace once the pacers dropped. It only happened twice that entire decade. This year, we saw it happen twice in the span of a couple weeks. If you wanna say the shoes were the difference between 12:43 and 12:40, feel free, but they're certainly not the difference between 12:50.x and 12:40.x.

As deep as the Oslo 1500 was this year, the 2015 Monaco 1500 was arguably better. The winner ran 3:26, and 2-4 ran 3:28 (or .1-.2 faster than 2-4 in Oslo). Down to 10th place, Oslo guys were only faster by ~.5s. It's not a coincidence that when the winner runs faster, the guys behind him run faster too. That difference is all mental. If you wanna say the shoes were the reason that places 5-9 were .5s faster (weird argument but ok), feel free, but they're certainly not the difference between 3:30 and 3:28.

Don't take the headline literally. Of course you cannot just get on the start line and convince yourself to run a PB of 30 sec. Your inner belief is in comparison with what you manage in training, and what you have done in the recent races.

What i talk about is the power of the mind to convince you that you are stronger than your competitors. A winning mindset superior to all your competitors mindsets. This kind of mindset is not a winning formula of its own, it has to be connected with training intelligence and the balance between rawness, carefulness and patience. This balance is often made in the relationship between coach and athlete.

And we cannot talk about the body and the mind as to different "systems". They are incorporated in each other, unseparable. But the mind is the superior, and the will is the executor of the physiological systems.

So Jakob does not believe he can run sub 3:26? What will change his mind?

He does. But he is tuning in on it. Steady and slowly by going for som weaker records like 2 miles and 2000 first. By doing that he is gradually convincing himself to manage sub 3.26.

Not likely, but if they do, they're pretty dumb.

Milers are only marginally better overall now than they were before magic shoes, as much as you'd expect from normal progression. There was Kiprop running 3:26 back then. Another guy Kiplagat going 3:27. Makhloufi was going 3:28, even Mo Farah. Iguider. Kwemoi. That Nick Willis character could do 3:29.

Now look at the past few weeks, fanboys going bananas over 3:27 like it's the most amazing thing ever. Nope.

And of course you'll say, but they are clean now! And that's how the shoes are "magic:" mentalism, controlling your mind to believe doping ended. Doesn't work for Katir, though, poor guy.

Ok. Did u just see what happend behind Kipyegon on the insane milerun;

"Behind her, every single person in the race set a personal best. Ireland’s Ciara Mageean was second in an Irish record of 4:14.58. National records also fell for Great Britain (Laura Muir, 4:15.24), Australia (Jessica Hull, 4:15.34), USA (Nikki Hiltz, 4:16.35), France (Berenice Cleyet-Merle, 4:26.06), and Venezuela (Joselyn Daniely Brea, 4:27.41).
Altogether, that’s seven national records and continental records for Africa, Australia, North America, and South America."

That's not physiology, it's psychology. Nothing more.