They say do not invest in what you do not understand which was largely the principle the speaker adhered to but what if despite not immediately understanding the business model and its profit making model yet your business instinct pushing you to invest. What should you do? Listen to the former or follow your instincts?
Actually modern education makes people dumb, unproductive and slaves to the system's industries.
To do well, it's better to discover what you are gifted or talented in and have successful people who share similar talents to guide/refine you. But before this, consume the Word of the CREATOR of the Universe... learn basic maths, language, civics, morality, health and other necessary/important knowledge. They are what we call general knowledge for all or most people/talents.
The basic education tend to be somewhat fair, natural and useful. If you wish to go beyond the basics, look for successful people in your related field/talent and those knowledgeable in the above subjects to guide you, or get the books they have written to guide you.
What you call instinct are basically natural knowledge and talents. They are what society ought to build on and refine. Passing through modern school with high scores doesn't mean you will know how to solve world's problem properly. Infact people with great scores from such schools will need to rely on their natural knowledge to do well in society. Knowledge they obtain from the schools will certainly fail them because they are false Knowledge. The knowledge is actually light quencher capable of making smart people dumb and foolish.
There are rare cases where knowledge is "supernaturally" obtained or uploaded in a human or taught by his CREATOR in the mind and spirit. These can only be possible via contact with the CREATOR.