At about 5:45 p.m. on this Sunday July 19 (Brussels, Belgium time), I wrote carefully one of the three numbers: "1", "2", "3" on my sheet of paper, and I surrounded it with a circle. Then, I wrote it again twice.

I shall repeat this number (which was obtained using a random number generator) from time to time during this test.

I ask you to write it here (if you think you know it, even with a doubt). You may also answer "I don't know".

So, your answer should be one of the three numbers: "1", "2", "3", or "I don't know".

I would also appreciate a little comment; you may say, for example, how confident you are in your answer.

Thank you for participating.