Uhnm.... Very correct sir. In all we do in life (business inclusive), seriousness is very important for us to make headway.
My father once said "without a serious approach, don't expect a glorious result".
No man is ready for business or life generally, who is not serious. When, you are seeking investors funds especially, even more seriousness will be required of you.
That's why from the world go, everything about the business must be spelled out. You must have all facts about the business on your fingertips.
Without all in place don't expect funding from any investor except of course, if he is father Christmas." :)