The Sea, The Well And The Knowledge

Close your eyes and think deeply.
Imagine.
You're in the middle of the deep blue sea, so vast. You're swimming against the current, so tiring, so sickening, but you're enjoying every second of it.
You're in the middle of the deep blue sea, so beautiful. You're shouting against the wind, so frustrating, so thwarting, but you're enjoying every second of it.
You're in the middle of the deep blue sea, so thirsty. You're looking for a drink, so dizzy, so silly, this time you're not enjoying it. You want a drink, but you can't get it. You want to drink the water you're in, but...can you? Is the water drinkable?

Keep your eyes closed.
Imagine.
You're standing next to a tiny old well, so small. You're staring down the hole, so shallow, so cheap, you're not enjoying it.
You're standing next to a tiny old well, so dull. You're counting each second that passes by, so boring, so nothing, you're not enjoying it.
You're standing next to a tiny old well, so thirsty. You're looking for a drink, so mortal, so lifeless, still, you're not enjoying it. You want a drink, but you can't find it. You want to drink the water deep in the hole, but..can you? Is the water drinkable?

Is the water drinkable? Is the water drinkable?
The deep blue sea, is the water drinkable?
The tiny old well, is the water drinkable?

The sea is beautiful, so big and full of life, but you can't drink it or it'll make you thirstier.
The well is dull, so shallow and cheap, but you can drink it, it will wash away your thirst.

So, which is knowledge? The sea or the well?
Both are.

But the sea can't help you when you're in need, no matter how hard you try it you won't succeed. While the well will give every single drop of water you crave, just to make sure you're safe.

So which is knowledge?
Knowing loads of things but doesn't help you ever, or knowing just simple things but gives a hand forever?