discussion
it would be nice to have a high level explanation of what PLN is in the beginning.
Toothbrush reasoning and pln-experimental — exploratory implementation does not lead to any page
if we include things like this:
lib_pln.metta on PeTTa runs the pln0.9 rule surface (~14 rules, multiplicative-confidence pivot since Peter Isaev's commit 7ffce05)
we should have some automatic update, since commits usually happen pretty often