The International Simutrans Forum

 

Author Topic: How cities grow - of interest to pak builders?  (Read 1985 times)

0 Members and 1 Guest are viewing this topic.

Offline Isaac.Eiland-Hall us

  • Benevolent Dictator
  • Administrator
  • *
  • Posts: 3649
  • PanamaCityPC.com/support/
    • Facebook Profile
  • Languages: EN
How cities grow - of interest to pak builders?
« on: February 22, 2015, 04:14:31 PM »
http://www.vocativ.com/culture/science/aztecs-werent-different-average-new-yorker/

Very interesting. I wonder if it might have any implications for pak makers? :)

Offline gauthier

  • Devotee
  • *
  • Posts: 3629
    • SNFOS'website (in both FR and EN)
  • Languages: FR, EN, JP
Re: How cities grow - of interest to pak builders?
« Reply #1 on: February 22, 2015, 06:26:38 PM »
To my mind, this article juste states obvious things. And the formula given in "Y = G N2 /An ∼ N2 /N5/6 ∼ N7/6" is anything but serious mathematics, its variables are not defined anywhere, so the formula has not any sense. Its syntax is also completely F up. This article opens a wide and very interesting subject, but no more than that.

I have not read the other articles which are linked, I hope they go deeper into this subject, and in more serious way.

Offline Ters

  • Coder/patcher
  • Devotee
  • *
  • Posts: 5469
  • Languages: EN, NO
Re: How cities grow - of interest to pak builders?
« Reply #2 on: February 22, 2015, 08:58:58 PM »
And the formula given in "Y = G N2 /An ∼ N2 /N5/6 ∼ N7/6" is anything but serious mathematics, its variables are not defined anywhere, so the formula has not any sense. Its syntax is also completely F up.

I have not read the other articles which are linked, I hope they go deeper into this subject, and in more serious way.

The formula seems to fully defined and less syntactically "F up"-ed in the study linked to by the article Isaac linked to. The latter seems to be another example of journalists trying to communicate science they don't understand and failing badly. Never seen ~ as a mathematical operator before, but this is not the type of math engineers study the most. It might also be a different "language" from what I learned.

Offline Combuijs

  • Web Team
  • Devotee
  • *
  • Posts: 1392
  • Maintainer of maps.simutrans.com
    • Combuijs
  • Languages: EN, NL
Re: How cities grow - of interest to pak builders?
« Reply #3 on: February 22, 2015, 09:30:37 PM »
The formula should read

Y = G * N2/An ~ N2 / N5/6 ~ N7/6

and is very serious mathematics. The ~ sign simply means "proportional to" and they rightly use it here instead of the = sign.

Wether the research itself and the conclusion can be taken seriously is a different matter though.

Offline gauthier

  • Devotee
  • *
  • Posts: 3629
    • SNFOS'website (in both FR and EN)
  • Languages: FR, EN, JP
Re: How cities grow - of interest to pak builders?
« Reply #4 on: February 23, 2015, 08:10:39 PM »
Indeed it is seriously explained in the other articles, I was only blaming the first one.