Intelligence can be demonstrated in a variety of ways and may not be immediately obvious. It is also important to note that there are different types of intelligence, such as logical-mathematical, linguistic, spatial, musical, bodily-kinesthetic, interpersonal, intrapersonal, and naturalistic, as per Howard Gardner's theory of multiple intelligences.
However, here are a few general indicators that might suggest someone is intelligent:
Curiosity: Intelligent people often have a deep curiosity about the world around them. They ask thoughtful questions and are interested in understanding things deeply rather than just on a surface level.
Adaptability: The ability to adapt to new situations and solve problems can indicate intelligence. This includes being able to think on one's feet and adjust one's approach when facing new or difficult challenges.
Good Memory: While not always the case, many intelligent people have a good memory and are able to recall and apply information that they've learned previously.
Observant: Intelligent individuals often have a keen sense of awareness about their environment. They notice small details that others might overlook.
Critical Thinking: Being able to think critically and analytically is a sign of intelligence. This includes being able to weigh different sides of an argument and come to a logical conclusion based on the available evidence.
Fast Learner: Intelligent people often grasp new concepts and master new skills more quickly than others. They are able to take in new information, understand it, and apply it effectively.
Good Communication: Although not always the case, many intelligent people are good communicators. They are able to express their thoughts and ideas clearly and effectively.
Humility: Interestingly, many intelligent people underestimate their own intelligence. This is known as the Dunning-Kruger effect, where individuals of low ability overestimate their ability, and individuals of high ability underestimate theirs.
Remember, intelligence can come in different forms and everyone has their own strengths and weaknesses. It's also worth noting that intelligence is not the only measure of a person's value or potential. Other qualities such as empathy, kindness, resilience, creativity, and others are just as important.