OBSERVATION (defense)

An important aspect of defense is to disallow non-referencability, because the ability of your rival to impact the situation in a non-referencable manner puts you at their mercy. keywords: [life] [bidding strategy] [positional strength] [strength of position] [precaution] [under the radar]

cracovians

Here is the link to the Wikipedia article on this topic. keywords: [clerical convenience] [matrix-multiplication] [matrix multiplication] [hand calculation] [calculation by hand] [astronomical calculations] [Astronomy] [geodetic calculations] [Geodesy] [solving systems of linear equations by hand] [Ax = b in matrix notation] [column-row convention] [manual multiplication] [notational innovation]

OBSERVATION (object level work versus meta level work)

Object-level work enables you to weather a storm. Meta-level work (aka organizational work) enables you to avoid a storm. cf: “To fight and conquer in all our battles is not supreme excellence; supreme excellence consists in breaking the enemy's resistance without fighting.” -- Sun Tzu, The Art of War keywords: [life] [distinction]