Final answer:
Fleeting knowledge of English provides a surface understanding suitable for basic communication, while insightful knowledge offers a deep comprehension that enhances expressive abilities and leads to lasting understanding, facilitated by insight learning and cognitive development in bilingualism.
Step-by-step explanation:
When comparing fleeting and insightful knowledge of English, it’s important to understand that fleeting knowledge enables a surface understanding of the language which may be sufficient for basic interactions. However, insightful knowledge is more profound, allowing individuals to understand and appreciate the nuances and complexities of English. This deeper comprehension enhances communication skills, fosters better expression, and encourages a lasting understanding of the language's subtleties. Learning through insight learning, which utilizes past experiences and reasoning, facilitates the development of insightful knowledge, allowing for faster and more effective problem-solving and language acquisition. Furthermore, being aware of the cognitive effects of bilingualism and the capacity to think differently in various languages demonstrates the profound impact that a deep understanding of language can have on an individual's thought processes.