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trainguy (Structural) (OP)
16 Nov 04 13:26
What?

Aren't we all aging at the same rate? (Excluding those of us moving at or near the speed of light)

tg
CorBlimeyLimey (Mechanical)
16 Nov 04 13:33
Not those poor kids who have Hutchinson-Gilford progeria syndrome.

25362 (Chemical)
16 Nov 04 14:12
Isn't the intention to express the growing proportion of elderly persons in the overall population ?
ctopher (Mechanical)
16 Nov 04 14:33
I know some people that are not aging at all ... i.e, 40 acting like still 19.
jimbo (Staff)
16 Nov 04 15:58
The only ones not aging are dead.

I hope to continue aging for a while longer.

Buy a dictionary, keep it nearby and USE it. Webster's New World Dictionary of American English is recommended, and Webster's Collegiate Dictionary.

CajunCenturion (Computer)
16 Nov 04 16:02
Define rapidly.

Good Luck
--------------
As a circle of light increases so does the circumference of darkness around it. - Albert Einstein

ctopher (Mechanical)
16 Nov 04 17:16
the act of speeding up a rap song? a guess
johnwm (Computer)
18 Nov 04 2:11
I used to think that getting old would be a BAD thing
.
.
.
.
.
.
.
until I considered the alternative!

Good Luck
johnwm
________________________________________________________
To get the best from these forums read FAQ731-376 before posting

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harrisj (Automotive)
19 Nov 04 9:46
Maybe not as silly as it sounds ......

The population as a whole is getting older; that is, there are more old people in it so the average age is increasing. So the population is aging.
If some nasty illness kills off all the old sods (like me), perhaps the population would become younger?

Or, if you like, we could argue about aging and ageing.

John
ctopher (Mechanical)
19 Nov 04 9:56
harrisj
what is the average age?
harrisj (Automotive)
19 Nov 04 11:43
Haven't a clue. Obviously varies from country to country, and particularly from continent to continent. But clearly people are living longer due to better medical care and (possibly) healthier living, so the average age of the poulation is increasing.
johnwm (Computer)
20 Nov 04 4:30
You could try:
http://www.census.gov/ipc/www/

Good Luck
johnwm
________________________________________________________
To get the best from these forums read FAQ731-376 before posting

UK steam enthusiasts: www.essexsteam.co.uk

metman (Materials)
21 Nov 04 23:54
Bung thinks that life is non-linear so go figure.


Leonard

jhardy1 (Structural)
22 Nov 04 2:06
harrisj said:

"But clearly people are living longer due to better medical care and (possibly) healthier living, so the average age of the population is increasing."

Not necessarily true - if the birth rate is high enough, even if the average life expectancy is increasing, the average age can actually be reducing. An example:

Age Bracket    Scenario 1    Scenario 2
0 to 15 years     25%              35%
15 to 30 years    20%              25%
30 to 45 years    20%              15%
45 to 60 years    20%              10%
60 to 75 years    15%              5%
75 to 90 years    0%              5%
90 to 105 years    0%              5%

In the first scenario, the average age is about 42. In the second case, even though average life expectancy is clearly increasing, the average age is actually only about 39, due to the larger relative fraction of younger population, due to a significantly higher birth rate.
jhardy1 (Structural)
22 Nov 04 2:11
Oops!

Correction - average age for Scenario 1 is 34.5, and for Scenario 2 it is 31.5 - but the argument is still valid.
harrisj (Automotive)
22 Nov 04 5:18
Julian

thanks for putting me right on that - you're absolutely correct - but in UK and most western countries, birth rate is near-zero, and the average is being skewed by the oldies living longer.

The original topic, I believe, was whether it is correct to say that the population's age is increasing or decreasing more or less rapidly - and I believe it is valid to say this, despite the fact that the individuals within the population are aging at the same rate.

John
digger242j (Civil/Environmental)
27 Nov 04 19:53
I have a friend who is an older gentleman. In the past, he complained to me about feeling old. I explained to him that I have always been aging more rapidly than he has, as follows:

When we first met, I was 30 years old, and he was 60, or twice as old as me. 20 years earlier, I had been 10 years old, and he was 40, or 4 times older than me. By the time I've known him for 30 years, I'll be 60 and he'll be 90. I'll be fully 2/3 as old as he is.

Obviously, since I'm catching up, I'm aging more rapidly then he is, and I always have been.
Bung (Electrical)
28 Nov 04 21:05
and this leads us to a paradox.  It is well known that time goes by more rapidly the older you get, ergo you are aging more rapidly the older you get.  For example, summer holidays when I was a child seemed to last for ever.  Now the years flash by at an alarming rate...

so which is it to be - the mathematical reality as espoused by digger242j, or the perceptual reality we all experience?

Bung
Life is non-linear...

Skogsgurra (Electrical)
29 Nov 04 3:28
Bung,

I think that you demonstrated the non-linearity very well there.

Aging, getting older, getting old... In my mind these are very different things.  Aging is what happens to you as years go by. Getting older means getting wiser and sometimes more playful than you used to be. Getting old is just bad. No one wants to be old.

So, let's get older as we age. But let's postpone the getting old thing!
flamby (Structural)
29 Nov 04 4:51
Bung,

There is no paradox. If you live up to 100 (I hope you will), you need 50 years to live first 50% of your life. But you have only 25 years for completing the next 50% of your remaining life.

The older you get, more rapidly you age. Truly non-linear.
DwattedWabbit (Civil/Environmental)
29 Nov 04 11:15
from Bung: "so which is it to be - the mathematical reality as espoused by digger242j, or the perceptual reality we all experience?"

I don't have an answer as to which one is right.  But think about this:  When you are 2 days old, 1 day is 1/2 of your life.  When you are 50 years old, 1 day is 1/18250th of your life.  So of course, the perception of time flying faster the older we get is a reality, if you see the relationship between the first perception and the second.

Maybe both are the right answer.  Some things have more than one aspect to define them, as the blind men describing an elephant.

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