Every economic era is characterised by certain abundances and by certain scarcities; these change over time; yesterday’s abundances become today’s scarcities and vice versa. When I was a young child in India, cotton was plentiful and polyester scarce. People valued the scarce thing over the abundant thing: so the rich wore Terylene shirts and the poor wore cotton. Even though the Terylene shirts were overpriced uncomfortable non-absorbent non-breathable stick-to-your-back sweat producers. Mo