[IrishCatholic]

I can almost see the outside of Plato's cave on this one. I was going to post something in an attempt to be funny but post 13 killed that. It speaks to time, loss, regret, love, life, and hope.
I approach time different. Time is our concept of being. It doesn't really exist. There once was no space, therefore there was no time. The universe is expanding, therefore it isn't infinite. There is something outside of space. So there is something outside of time. The whole existence of matter, dark matter, super strings, mass distribution of the universe (visible so far) speaks to an analogy of the smoke left after a fourth of july firework. It was bright and shiney, now it is just a memory.
I think that we are on one little planet, not yet convinced that we should venture out into the neighborhood, much less the great beyond. Time travel? I would just guess that someday post 13 will get the chance to talk with her dad, get a hug, and catch up.
Time? not too worried about it. The human mind and soul really aren't connected with time. Time is just something we use to tell when dinner is ready.

[ffusco]

I was thinking about Plato's Cave as well. It is possible to see the past but not interact with it.

[I_dmc]

Mankind's greatest weakness is the necessity to define things in order to understand them. There is no space, there is no time, no dark matter, etc, etc. All those things are man's attempts to define what he cannot understand, in a way so that he may understand. "Seeing isn't believing, believing is seeing".