No, no. There is no need to challenge, but I will read to you what the book says on page 1026, in chapter 20, on committees:
The Standing Orders provide that any Member, whether affiliated with a political party or sitting as an independent, may take part in the public proceedings of any committee of which he or she is not a member, unless the House or the committee in question orders otherwise. The Standing Orders specifically exclude a non-member from voting, moving motions or being counted for purposes of a quorum.
That's all I was trying to say. Do you want me to read it again? I didn't write this, by the way.