The core is that we always represent time as space.
In our mind, the past, present, and future are 3d or 2d relations. The week, a month, your lifespan all have some spatial "shape", or order at the least. I'm no expert, but I am pretty sure this is not Synesthesia like the article implies.
"My" inner year is a counter-clockwise circle. But my week is a strip, even though week loops like years. My life is a downwards strip, I guess because I'll die someday. History itself is an upward strip, because time itself will never end (presumably).
In our mind, the past, present, and future are 3d or 2d relations. The week, a month, your lifespan all have some spatial "shape", or order at the least. I'm no expert, but I am pretty sure this is not Synesthesia like the article implies.
"My" inner year is a counter-clockwise circle. But my week is a strip, even though week loops like years. My life is a downwards strip, I guess because I'll die someday. History itself is an upward strip, because time itself will never end (presumably).