A recent modification to the hypothesis that the universe is a hologram (holographic principle) yielded some testable hypotheses. These predictions came true and may be evidence for a holographic universe. Essentially, if the universe is a projected hologram, we should be able to measure the blurriness of it.
Read more here,
And Here, because I can't explain it as well as actual scientists can...
Thank you string theorists for contorting my brain.