Re: Lake Tana conundrum


Gareth Morgan
 

There is something fascinating about science. One gets such wholesale returns of conjecture out of such a trifling investment of fact.

Why bother with facts at all when you have Wikipedia? Or you might as well just guess, like the Bioko delusion.

The Mississippi delta is over 240 km long. It deposits and then it erodes. Lakes don't unsilt. Ever.





From: AAT@groups.io <AAT@groups.io> on behalf of Allan Krill <krill@...>
Sent: Sunday, October 3, 2021 10:20 AM
To: AAT@groups.io <AAT@groups.io>
Subject: Re: [AAT] Lake Tana conundrum
 
On Sat, Oct 2, 2021 at 11:05 PM, Gareth Morgan wrote:
If the lake has been silting up at the rate of 15 mm a year for 5 million years, then it would originally have been 75 kilometres deep -- twice the thickness of the Earth's crust.
Yet, however insane that proposition is, I am confident that everyone will still believe that Lake Tana is 5 million years old, based on no evidence whatsoever
Gareth, your conjectures often remind me of this observation by Mark Twain:

In the space of one hundred and seventy-six years the Lower Mississippi has shortened itself two hundred and forty-two miles. That is an average of a trifle over one mile and a third per year. Therefore, any calm person, who is not blind or idiotic, can see that in the Old Oolitic Silurian Period, just a million years ago next November, the Lower Mississippi River was upwards of one million three hundred thousand miles long, and stuck out over the Gulf of Mexico like a fishing-rod. And by the same token any person can see that seven hundred and forty-two years from now the Lower Mississippi will be only a mile and three-quarters long, and Cairo and New Orleans will have joined their streets together, and be plodding comfortably along under a single mayor and a mutual board of aldermen. There is something fascinating about science. One gets such wholesale returns of conjecture out of such a trifling investment of fact.
Life on the Mississippi

See this compilation of Mark Twain quotes (hundreds of them): http://www.twainquotes.com/Conjecture.html
 
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AquaticApe.net

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