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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

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