And what are &quot;changes&quot;? Does a minor crop or sharpening constitute a change? (Or, more precisely, a remix, transform, or build upon.)<p>Leaving aside whether they are free licenses and whether that matters, my issue with the CC variants is that both NoDerivs and (especially) Non-Commercial are nearly impossible to define in the general case and therefore cannot be safely relied upon as a grant of permission if you&#x27;re being legally conservative.