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get that there is not a single c<strong>en</strong>tral<br />
architect with a <strong>en</strong>ormous salary!)<br />
But don’t start adopting slime<br />
cells just now, there is (Who has not<br />
expected it?) a huge draw back: The<br />
experim<strong>en</strong>t is very time-exp<strong>en</strong>sive.<br />
It is hard to adapt it to complexer<br />
situations. Also. and above all, it<br />
is dirty biology. So as to not to get<br />
our hands messy we have to inv<strong>en</strong>t<br />
a new method, a simulation. label<br />
As everybody knows you cannot inv<strong>en</strong>t<br />
anything new without building<br />
on ol<strong>de</strong>r knowledge. The closest approximate<br />
of the real world is the<br />
cellular automaton. It assumes only<br />
that every ev<strong>en</strong>t happ<strong>en</strong>s on a discrete<br />
n-dim<strong>en</strong>sional grid. (Where<br />
the second dim<strong>en</strong>sion is the best<br />
studied.) This approach was further<br />
<strong>de</strong>veloped by biologist to inclu<strong>de</strong><br />
sets of partially differ<strong>en</strong>tial<br />
equations simulating the diffusion of<br />
chemicals. We can trace this <strong>de</strong>velopm<strong>en</strong>t<br />
back to the later work of<br />
Turing. The recognition of the socalled<br />
Turing Patterns are the third<br />
most notable achievem<strong>en</strong>t after the<br />
Church-Turing thesis and the Turing<br />
Test.<br />
With such a framework it might<br />
be possible to steal one more of<br />
nature secrets. Is it possible? I<br />
will found out. Sci<strong>en</strong>ce begins with<br />
questions not answers.<br />
Figure 1: The slime mold pres<strong>en</strong>ts: An alternative railway network for the<br />
region of Tokyo<br />
6