There nothing meant to be aggressive in sentence. I might have removed the word "you" but trivial is a pretty accurate word.

The word consider might be straightforward when you speak about someone's subjective experience about what he's doing but it's not straightforward if you speak about the behavior of billions of neurons.

When solving a go life and death problem I might have only a conscious experience of 'considering' 2 moves per second but that doesn't mean that my brain isn't effectively analysing many more positions and only brings the interesting one's up to the level of conscious awareness. If you look at the amount of positions a computer has to go through to solve a go life and death problem that's the best explanation of how humans can effectively solve life and death problems that effectively take millions or billions of moves.

I don't think you can know whether or not I understand cognitive neuroscience based on one paragraph I have written.

Your post indicates that you can simply transfer a notion of "consider" that we use in daily life to describing the behavior of large amounts of neurons where we are not conscious of what most of the neurons in our head are doing.

Trivial is simply the accurate word for describing a daily life notion of a word.

Surely if you can read the relevant area of the brain, and have the computing power and understanding of neuroscience required, then any thought is readable.

There no way you read billions of neurons accurately at the same time. That just not feasible. The thing you can do is reading a bunch of neurons or reading a signal that aggregates the activity of a bunch of neurons.

Why should this require any extra effort on the part of the brain?

Nearly all BCI designs that are used in the real world take effort. A bunch of them even have a learning curve.

Are you a neuroscientist?

Depending how on wide you define the term. I have set in university course on neuroscience that discussed BCI's.