I think difference between savings and investment (or consumption) is in reversibility. Savings are reversible, basically if you "invest" in any liquid enough a

I think difference between savings and investment (or consumption) is in reversibility. Savings are reversible, basically if you "invest" in any liquid enough assets that keep value, then you save. Investment (and consumption) is irreversible, once you made the decision, it's done deal - somebody does the work, energy is spent, entropy is produced and so on. That's why, contrary to mainstream economic opinion, it is useful to save. Saving lets you react to investment from competitors, by postponing the decision after they made their move. This gives you advantage (power) if you're big enough.