Linear term in epsilon eq 4.18

[AlexandervGussich]

Location
Please provide:

1. Version (bottom left page) Draft April 30 2021
2. Page number 70
3. Line/equation number 4.18

Describe the mistake

In the derivation of the bias variance decomposition I miss a linear term in epsilon in equation 4.18.
I can see that this term (linear in epsilon) vanishes when we take the expectationvalue over x_star in eq 4.19, but not before.

Suggested change
If you have an idea on how to fix it, please let us know

Additional comments