why use this function

[Pshower]

https://github.com/py-why/EconML/blob/51994dffc15bfd2425ce66f0848631844e46c599/notebooks/Double Machine Learning Examples.ipynb#L119

why in dgp, te is e^(2x)?

[kbattocchi]

No particular reason, other than that it's not a simple polynomial, so that it shows what happens if your model is somewhat misspecified.