I'd thought that was the case with my first Echo. But it wasn't so much a change as a memory that hadn't made sense at the time.

[But, over the past year, he'd come to understand a bit more of what had gone on.

That's not necessarily helpful to Thom, though.]

Echoes can bring all sorts of things, though, not just memories or physical objects. It might well just be something that isn't relevant to your lives yet, this time.