I'm not sure I understand that, but retrocausality seems to give some avenues of research.
As for my confusion, I'm not clear what the timescale has to do with it. If the past can be affected by the present, what does the length of time have to do with it? If observing the double-slit...
As if you couldn't guess from the question, I'm very much a layman wrt physics, but here it is anyway:
I've read a number of (non-technical) books on quantum physics but I can't seem to find much - indeed anything at all - on the role of time in collapse of the wave function when considering...