Yup, and the Madelung equations explicitly present QM without complex numbers: https://en.wikipedia.org/wiki/Madelung_equations#Equations https://en.wikipedia.

Yup, and the Madelung equations explicitly present QM without complex numbers: https://en.wikipedia.org/wiki/Madelung_equations#Equations https://en.wikipedia.org/wiki/Madelung_equations#Equations