Quote: explorable systems have visible states and allowable actions, results are easily interpreted, actions are free and reversible

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There are three requirements for a system to … able to do the allowable actions. The visibility … and methods. 2. The effect of each action … of each action, to develop a good mental … 3. Actions should be without cost. When an … [Irreversible actions should include sufficient warning, be difficult to do, or be nonexplorable].   Google-1   Google-2

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Quote: irreversible actions provide sufficient warning, are difficult to do, or are nonexplorable

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