If an entrepreneur had an idea that you think is imaginary, will you encourage him or you will convince him that it's not a good idea?

Entrepreneurship is about seeing things that other doesn't see. So; it is all about imagination. Then comes the hard work; building a profitable business model that take this imagination into reality. Therefore; I will encourage her or him to follow the best practices in the world of business that is building a business plan, creating the business model, follow the lean startup practices, and engage in the Entrepreneurship world until she or he is totally sure it will make money (big amount of money).

I hate to break this to you, but someone with an imaginary 'idea' who needs convincing, is not really an entrepreneur. Because:

1. All 'ideas' by definition are imaginary
2. An entrepreneur is someone who has (at least) attempted to turn the idea into reality

In fact, a true entrepreneur would be the one convincing other people that his 'idea' is a good one - not the other way around.

well ,lets set and ill tell you if is it achievable or not, some iedas sounds crazy , but it may be one of the greatest business ever 

it is depends on your definition of imaginary, is it doable or not.

Entrepreneurship/ entrepreneurs development should be handled using a positive a approach to deal with. This is important to bring disruptive innovation and ideas to live which might be viewed imaginary in the first place. Thus, I will encourage...