I-K wrote:...So good that you don't rebut any of them directly...
well actually I have, but you may have missed the point a bit. Its not about beating your chest and vociferously declaring that you have the only correct opinion, it is about considering the possibility that there may be an alternative answer .....
but night on the dark side of the moon is, and always will be, eternal.
I=K wrote: No, it isn't. The moon, including its dark side, has a 28-(Earth)-day diurnal cycle. Think it through.
It has a dark side that is eternally dark, regardless of any rotation around the Earth. This is the point. The 28-*day* cycle (there is that concept again

) is somewhat irrelevant , however it does provide a pointless diversion from the topic at hand
I-K wrote:..Your previous example of a tide-locked Earth is better, in this instance.
. Huh ? a tide-locked earth ?? when did I use that as an example ? You've lost me there mate ..
There is no 'time' on the dark side of the moon... nothing to measure and thereby construct a convenient method of measuring 'time' as we understand it.
I-K wrote:what about the movement of stars?
what about it ? To suggest that the almost infinitesimal movement of the stars to an observer on the dark side of the moon could be used to fashion a relevant unit of measurement for that observer is laughable

" Did you see that shooting star last millenia ?? It was grouse !! "
I-K wrote:...Could a primitive civilisation without experience of daylight not construct an hourglass, or invent the toothed gear ?
.
Of course not !! They would have, as you say, no experience of
daylight, and would not be able to *see* in order to construct a dayglass, or a yearglass, or a whatever-you-want-to-call-it glass, or invent a toothed gear ( How is this in any way relevant to a discussion about the concept of time ?)
Nothing can change this, and if you could imagine an Earth with constant sunlight on one side, then the whole concept of 'time' falls on its arse.
I-K wrote:...You still haven't explained *why* the passage of night into day and back again should be the only way intelligent creatures should perceive time.
Yes I have. Its the *only* way that intelligent creatures
can perceive 'time'. If you have another look at the earlier explanation, the whole concept of 'time' is rooted in the day-follows-night transition

and this has given rise to the subsequent convenient 'packaging' of time into little pieces that carbon-based life forms like us can understand, like hours and minutes.
I-K wrote:...Why shouldn't awareness of the passage of time follow simply from the perception that things change? How, without moving through time, did I come to move from typing the word "change" followed by a question mark to typing a second question mark at the end of this sentence?
Answer that.
Easy. You haven't moved anywhere. You haven't done anything other than had some minute changes occur to your life-form, which *you* measure in minutes and seconds.......your life-form has transformed by a minute amount, and is closer to death than it was a few beats of your heart ago. Thats all.
8 minutes for light to travel from the sun to the earth - it could be 25 zoobots for all its relevance.
I-K wrote:..... You're making the same point I made in my previous post and you're continuing to use the arbitrary nature of a unit chosen to measure a quantity as an argument for the quantity itself being arbitrary.
So you agree then that the nature of the unit of time is arbitrary ? Good, I am glad you have come to your senses.......
I-K wrote:....The metre was defined, completely arbitrarily, by the French as being 1/10,000 of the distance between the Equator and one of the Earth's poles. Does that mean that distances don't really exist?
This unit is not arbitrary at all !!! It is a defined unit of length measured in exactly the manner you have described !! How is is that a distance of 1/10,000,000 the distance between the equator and the pole be an *arbitrary* measurement ????
I-K wrote:don't forget, creatures on the dark side of your tide-locked planet, living in perpetual near-darkness, probably wouldn't evolve eyes. They couldn't see; if so, how would they perceive distance, and if they couldn't, wouldn't that, by your own logic, mean that distances don't exist?
- now that is just silly. Even a blind trog can walk back to his cave from the closest river, and the concept of 'distance' would be apparent and real to him....
It is simply the expression of a unit that we have conveniently used since 'time' imemorial

because of the
physical properties of the planet we live on. No more no less. The light from the sun does not rely on the passage of time to reach Earth, it gets here regardless of whatever unit we choose to measure......due to its physical and chemical properties only.
I-K wrote:...Light is electromagnetic radiation. It does not have chemical properties.
It does, the fact that you may not be aware of them does not mean that they don't exist.
The whole concept of a timeless universe is anathema to current theoretical scientists, who fear the consequences of such a beast.
I-K wrote:..OK, so how would a timeless universe begin function?
How do you account for the fact that objects and systems pass from one state into another (ie. change) without invoking the presence of time, a property of the universe as fundamental as length, width and height?
A timeless universe has *NO* beginning or ending - that is the whole point

. It does not 'begin' to function, any more than it 'ceases' to function. Accounting for objects passing from one state to another has already been addressed, however I will re-state that the physical composition of carbon-based life forms (like us) is the reason for change, it has *nothing* to do with some abstract concept called *time*.
The only reason that *time* is considered a fundamental property of the Universe is because the alternative is too horrendous for most free-thinking carbon-based life forms to contemplate.
BTW thanks for the brain-food - Its always good to get the cerebellum out of first gear !!
