Today, I had lunch with the mother of the internet. Among other things she told me her poem that accompanied the spanning tree protocol . Perhaps if a poem was required for each algorithom and protocol submission, computer science would be simple and clear. With great pleasure I reproduce Radia's poem:
I think that I shall never see
a graph more lovely than a tree.
A tree whose crucial property
is loop-free connectivity.
A tree that must be sure to span
so packet can reach every LAN.
First, the root must be selected.
By ID, it is elected.
Least-cost paths from root are traced.
In the tree, these paths are placed.
A mesh is made by folks like me,
then bridges find a spanning tree.