Comment by the_af

> Is light slow? Or is the human perception of time just scaled down as a result of our rapid metabolism and infinitesimality?

It's slow for humans to explore the cosmos.

"Slow" is meaningless without a frame of reference, and "humans" seems like a good frame of reference, since it's us -- and not plants or stars -- who are writing on HN to discuss this.

Because it's us, humans discussing this in HN, the frame of reference is implied and it's not necessary to spell it out.