When listening to type descriptions, remember that “type portraits” can never accurately describe all people of a given type. Descriptions and portraits like these can only describe the types as they typically are.
In ‘Psychological Types,’ Jung describes 8 main types, but does in practice refer to the dominant-auxiliary combinations popularized by later authors, such as van der Hoop, Pauli, Myers, and Briggs.
INTPs are much more likely to look before they leap than ENTPs. ENTPs have inferior Si, which means that Ne’s exploration of possibilities and desire for novelty distracts the ENTP from accessing their personal historical database. This can cause ENTPs to be reckless and quick to abandon stability in favor of the unknown. INTPs on the other hand desire to understand everything and are more grounded in what’s known. This means INTPs are more likely than ENTPs to consider the logical consequences of impulsive activity.