Part 8/9:
However, the key point is that the patterns observed at detector D1—a summary screen—are merely reflections of the photons' path information, which are entangled with those that arrive at D2, D3, D4, or D5. By intentionally selecting which subset of photons from D1 to analyze, one can recover interference patterns that correspond with later measurements.
Conclusion: The Nature of Time and Measurement
Ultimately, choosing how to interpret the data does not change the past; rather, it merely selects which subset of available data reflects a pattern reminiscent of interference. Present or future choices cannot alter the foundation of past measurements but can determine how they are understood and presented.