This is my take on a question in Quora:

My Comments:

Frankly, it doesn't matter, for it depends on whether you are a visual or auditory learner.

What matters the most is what you are doing after the learning and acquisition.

The harsh reality is this: Knowledge is not measured by what's stored in the headspace after acquisition; it's always defined by your productivity, i.e. what you do and what you don't do.

To put it in a most realistic perspective, the ultimate fire test of your reading or listening endeavour is whether you have transmuted the lessons into creating a productive outcome or construct a concrete deliverable that will eventually add/compound/multiply value to your life, or to your work, or to your business, or even to your client(s).

To paraphrase Tony Robbins, let your LESSONS lead to ACTIONS!

As a matter of fact, the late Bob Proctor said it best:

"No amount of reading or memorizing will make you successful in life. It is the understanding and application of wise thought that counts."

There lies your personal ROI.

Godspeed to you!