when is the prediction result of this demo?

[ws1234321]

Hello, when is the prediction result of this demo? I entered three times and it seems that the result is the value of the middle time. Does any teacher know the reason? Please feel free to comment, thank you.

[tewalds]

You may find #32 and #56 helpful.

[ws1234321]

Thank you. I think I understand a little. I will make changes in an aligned way. Thank you very much for your advice.