Trust me, learning the science alone without learning the Act of running that business of intent will possibly crash the business and will surely lead to you being duped, taken unnecessary advantage of, most times terrible loss of capital, risk of total shutdown and in the end you start blaming village people. The act of a business model can only be learned by working in an already established firm for a period of time and being open to learning actively during your stay. Believe it or yes, there are hidden secrets in any business that no matter how much interviews you are granted, it will most likely not be mentioned. You learn them as you're constant and committed to the firm activities. These secrets are passed to you either directly or indirectly from the masters.
Working with an already established firm doesn't guarantee that you will excell in that particular business as every business has it's own challenges irrespective of how learned or informed you are about that business.
There are basic technique and principles that a business requires to be able to encounter positive results. Like knowing how to interact with your customers, the location of your business, the cost of the things you are dealing on.
You might be very good in a particular business but you don't have a good interaction with people that patronize you, you will see that you may find it difficult because you're gonna scare people away due to your business approach.
Another is the location of your business, if one locate his business in an area where the demands of things he is dealing on are not much required, you will see he will find it difficult because he's going to record low patronage because people around that vicinity may not need what they sells over there and if it is also an area that doesn't have a good road network, motorist might find it difficult to access your location thereby it is going to affect the growth of your business.
Selling products more costlier than normal also scares people away from your business because they will make comparison with what others are selling their own products and when they find out you sell higher, customers will not patronize you always.
It is important for us to know that no matter how experienced you are in a business, it requires basic technique and discipline to be able to sail through in your line of business.