Einstein tells us time is what a clock measures, but clocks measure

units of flow. Clocks are convenient measuring sticks that allow

comparison of motion, change.

If you ask what a yardstick measures, I reply distance and show you

examples of distance, my height, the length of your car, etc.

Mass and energy can be stored and bits can be moved. Can time be

stored? If so in what way?

Consciousness requires comparisons to understand our world. If you

and I want to know how fast we can run, we can run a foot race and

note our comparative movement. I reach 100 meters while you go 80.

Your motion is 80% of mine. Decisions of who to send as a messenger

can use such a ratio to make decisions.

Clocks are so useful we forget they are tools to form comparisons,

ratios, to frame our understanding.

I think "time" is a convenience to provide comparisons, but suggest

there is only space of the now. If there is a recording mechanism

available, nows-past can be recorded and revisited..

What is "Now"? That is a mystery. Our senses deal in electro

magnetic waves and various nuclear forces which more and more seem

less and less substantial.

By the way, the smallest "now" might be Lorentz's distance. If only

he could have developed his transformation without light speed and

made it a ratio. Ratio of smallest distance to smallest energy unit?

Useful ratios such as circumference to density get by without time

units, horse races could be determined by ratios, man needs

comparisons to form understanding. Clocks are handy tools, but is

there a "time" dimension?