"G=EMC^2 Glazier" wrote in message...
...

Hi Painius Well I was only using the wheel in regards to life forms.
Man invented the wheel. I'm sure slicing a tree trunk gave him his
first wheel. That is interesting about square tree trunks. Might throw
this in. The wheel barrel was invented in 1030 AD,and was the first
labor saver, One man could do the work of two. Bert
PS Is there any reason given for square tree trunks????

Oops! sorry, Bert, missed this one...

It's really an interesting puzzle about the trees. A cross-
section of the trunk would be a square with rounded
corners. At the base of the tree the "corners" slowly
curve outward into a root system. So the trees each
have four root systems to gather water and the needed
nutrients from the surrounding soil.

When you're used to seeing round tree trunks, these
Panamanian trees with square trunks are quite a sight!

happy days and...
starry starry nights!

--
A Universe of Beauty
Our Hubble often shows,
Let's not forget our duty
To pitch the way it Glows!

Paine Ellsworth