Anything seems possible, when you don't understand it...

Many people subscribe to the notion that something must be possible.  It must, with enough effort, time, or money.

But that is a fallacy.  Just because you believe it can be possible does not make it so.  The less you understand, the more likely you don't know some important detail, fact or concept that underpins why it isn't possible. The less you understand, then the less chance you can make it so.

Beware of belief ahead of facts.

Some people spend their entire working life trying to achieve what might be possible.  The Wright Brothers started a bike company in 1892 and struggled towards the first powered flight in 1903.  Many mistakes and false starts lie between believing you can and doing it. Eleven years towards final accomplishment.