The same move of Thurs inward also enables the most mysterious rune of Elder Futhark - Jera. But there is a challenge with the Jera rune itself. Starting from the earliest examples of rune inscriptions, there is uncertainty about their proper shape. The rune Jera consists of two independent angles pointing outward and shifted vertically against each other.

On the oldest found rune stones, there are examples of the upper position of the first angle. It feels like rotating counter sunwise and has an accent on Water, while Fire is missing:

But there are also examples of the lower position of the first angle. It feels like rotating sunwise and has an accent on Fire, while Water is missing:

But even with two different variants of Jera, the complete Broken Stone looks exactly the same, they both match it perfectly:

There is also another variant of Jera - horizontal. It's a sunwise Jera but rotated further in a sunwise direction so the left angle is pointing upward and right - downward:

We are not going to use it, but it's a good illustration of what "sunwise" means in the context of the Jera rune: the sun first rises and then sets.

The meaning of the Jera rune is "harvest", "season", and "year". The harvest season is autumn, the time of red leaves, and it's better to have dry weather to harvest. And the Water is a better fit for Spring.
The sunwise rotation direction of the lower Jera variant connects it better with "season".
So in direct comparison, lower Jera wins.

Let's compare two variations of the World bind rune.
With upper Jera:

...reminds me of a flower. Looks too nice and pictographic to be Norse. Water and Air dominate.

And with lower Jera:

Reminds nothing, but invokes the perceived presence of Eihwaz. Feels more grounded, stable, and balanced, evenly distributed across five worlds, which better fits the balanced nature of Philosopher's Stone.

In modern practice, the upper variant of Jera is used much more often, but the majority is not always right. In this book, we will use the "lower" sunwise-directed variant of Jera.

In our book, we use a sunwise-directed variant of Jera with the left side lower than the right side, so if you pull Jera in these opposite directions - it will rotate sunwise, symbolizing the sun, which first rises and then sets.

Jera means "harvest", "season" and "year":

It represents the cyclical nature of our world, caused by the introduced "imperfection" - the event of the killing of Ymir. In mechanics, the rotational part of the movement results from the force applied not precisely to the center of mass of the target object.

But we are not going to blame Odin for making a mistake. This game was started much earlier by someone hidden in the Emptiness. Fire and Water are not just two equal halves, they are different. And Jera is a spiral spring, winded to run the clock, the Ymir's power of time focused on the Emptiness by both descending and ascending bars of the Thurisaz rune which is the right half of Jera rune.