They Use Fewer Electronics
It might feel impossible to do this in the digital age, but intelligent people understand that it comes with benefits. They prefer to control the amount of information that they take in. This is why they prefer to do with fewer gadgets and devices. It does not mean that they do not own them, but they avoid using them too often. Hewlett Packard ran a study on this and found out that workers who received a lot of information tend to be more distracted and less productive!
They Love Facts
Rumor has it that intelligent people like to talk to experts, do their research, analyze the facts, and reach a conclusion. They do all of these things before they make up their mind. They like to be well-informed and rely on facts. When you are in a debate, they will always present arguments based on facts.