This quote by Oscar Wilde suggests that a person who is unable to perform a task or action may, paradoxically, be the best person to judge it. This is because their inability to do the task themselves allows them to remain objective and impartial. They can view it from a distance, without any personal bias or self-interest. This perspective can often lead to a more accurate and fair judgment.
The quote also hints at the idea that expertise may not always be the most important factor in judging something. A lack of personal experience can sometimes be an advantage, allowing a person to see things that those deeply involved might overlook.
Applying this idea to today’s world, it could be suggested that people who are not experts in a field may sometimes be better equipped to make decisions about it. For instance, in politics, those who are not politicians might sometimes have a clearer view of what is needed than those who are deeply involved in the political system. Similarly, in business, outsiders might sometimes be better able to spot opportunities or problems that insiders miss.
In terms of personal development, this quote might suggest the value of seeking feedback and advice from people outside of your own field or area of expertise. They may be able to provide fresh perspectives and insights that you would not have thought of yourself. It also suggests the importance of humility and open-mindedness, and the willingness to listen to and learn from others, even if they are not experts.