[ZeonOne]

Yes, there is an error with the endurance. It should not be (Endurance * .025). It should be (Endurance * .020). Plus, there are three factors that's not accounted for.

One, it is the energy usage. As we all know, the less energy we train, the more we gain. It will need too many test to actually figured that portion of math. Plus, who know, something might pop up during the middle of the test.

Two, the beginning value with 100 happiness and 1 endurance.

Three, the random value.

However, With the +/- 3 dev point buffer, the formula does give me a rough idea of where you will be in training.

For an example, I get around 142 dev per train. With this formula, it predicted me to get 142 - 148 dev pt per train.