埋蔵量というのは「埋蔵されているもの」の量のことではない。
埋蔵されている資源のうち、「掘って採算が合う」もののことを言うのである。
(略)
だから、埋蔵量は年ごとに変動する。
エネルギー政策について (内田樹の研究室) (via markie) (via shigesa) (via utatane) (via nagas)
2009-07-05 (via gkojay)

2010-05-23

(via gkojay) (via hepton-rk) (via himmelkei) (via rarihoma) (via puruhime)
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