Here is a set of summary links: I) We live in the Information Age https://data-information-meaning.blogspot.com/2019/03/we-live-in-information-age.html II) Too much data https://data-information-meaning.blogspot.com/2019/03/too-much-data.html III) Metrics https://data-information-meaning.blogspot.com/2019/03/metrics.html IV) Abstractions and judgements https://data-information-meaning.blogspot.com/2019/03/abstractions-and-judgements.html V) How do we know we made a reasonable judgement? https://data-information-meaning.blogspot.com/2019/04/how-do-we-know-we-made-reasonable.html ---- https://data-information-meaning.blogspot.com/2019/04/scale-hierarchy-and-distance-metrics.html