Drip...

Irrigation in the desert is best by the drip method...

The water penetrates deeper,
moistens the soil more effectively,
uses much less water,
and is very cost effective...

Learning & teaching are about the same...

If you cram for test the night before you may get an A....
for a minute you may have the facts down...

But to learn it - integrate it, own it, duplicate it, have it as part of your being...
get a little of it
the meditate on it...
reflect on it...
use it....
work with it...
teach it to a few others...

Very effective, most efficient...