If philosophy does actually make positive & meaningful contributions to the world, then here is a metaphor to help us understand what a philosopher is actually doing:
He is sitting amidst the top of an invisible tower, hoping that someone will follow the same groove in the ground that the philosopher did, discover the existence of the tower, and climb to the top to discover the philosopher.
The philosopher waits for this to happen, because it will give him confidence in his own knowledge of the ghost tower’s existence. After all, the people living in the world below might just think the philosopher is insane if he didn’t have another witness to verify the existence of the ghost tower.
Why doesn’t the philosopher just climb down and then bring other people back to the ghost tower? Because he is too stubborn with fear, and he fears other people’s stubbornness.
He is stubborn with fear because he knows that its possible he might never find the tower again if he leaves it.
He fears other people’s stubbornness because he knows that people do not normally believe something that sounds so ridiculous and unrealistic, and they might be simply unwilling to follow him to the tower because they are convinced its just a waste of their time.
He doesn’t know the precise nature of the tower - he just knows that it exists. What if it were to disappear when he leaves it? Or what if the sections of it disappear after he originally stepped over them? He knows only that staying seated at the top of the tower is his best chance of doing something that isn’t regrettable.
After all, the tower might not be as wide as he remembers it - if he stands up he might lose his balance and fall to the ground.
Even bending down to use his hands to examine the dimensions of the tower could have the possibility of making him lose his balance and fall.
In fact, these very thoughts make him feel too scared to move, or breathe too deeply even.
Then he thinks to himself “Even if another person were to come up here and find me, they’d be stuck up here too! I couldn’t do that to someone - especially when its for no good reason other than because I don’t want to be alone while I’m stuck up here.”
Because of this, he doesn’t even try to yell down at the people below passing by - he just remains seated at the top of the tower, petrified in fear.