The loss in data (and thus quality) may not always be easily perceived through casual listening.

He was not a telepath, as John could easily perceive.

But he perceived easily that it would not do.

I easily perceived that there was something in reserve.

Of course I can easily perceive when you have been obliged to form your ideas from stuffed specimens.

It's not that television has not had characters who could be easily perceived as Jewish.

His mirth was easily perceived to be the fruit of exertion.

The expense is greater initially, but the payoff is easily perceived.

You will easily perceive that I am announcing a calamity for you.

He tells her that there is no true chaos in the Universe, just an Order of great complexity than can be easily perceived.