Einstein welcomes Schr\u00F6dinger's wave mechanics as an advance on Heisenberg-Born's matrix mechanics.
On the one hand it is much clearer, because it works with waves instead of abstract algebra. On the other it seems to Einstein to be deterministic, and therefore the salvation of the causality principle.
Shortly afterwards, however, it turns out that Schr\u00F6dinger's formulation is largely equivalent to that of Heisenberg.
Text__pj_GYKObEd-WfYQ0GneCwQ_title=Delight over Wave Mechanics