As a business person it is good to know your stuff. Have some knowledge about what you are selling because being able to explain how/why what you're selling is used is a good after sale service/vantage point.

• You sell electronics, but can you show basic connections to at least power them up?
• You dispense/sell medicine, but you don't know the indications, dosages, common side effects, contraindications, box warnings, etc.
• You sell fabric or you're a tailor, but you don't know the difference between cotton, wool, polyester, linen and the disadvantages of each material.
• You sell arrow roots/nduma, but can you explain to the customer how best to boil them to avoid them tasting waterlogged/undercooked? -You sell cars, but you don't know the features of the vehicles, the pros and cons.
• You are a teacher, but you're teaching using the old curriculum.
• You are a barber, but you don't know which machine or number is best suited for what. You inflict painful cuts on people's scalps.
• You sell land yet you don't know the legal procedure of transferring land.
• You are a financial adviser yet you cannot define various financial instruments, classify them in terms of risk vs rewards and unique options for each client.
• You are a cook/chef yet you don't know the recipe of common/basic meals in your locality.
• You work in KRA, but can't explain various taxes in simple language.
• You say you are a shoe shiner, but you paint shoes instead.

If I don't know, then I need to take time and learn.