  We study the susceptibility of committee governance (e.g. by boards of
directors), modelled as the collective determination of a ranking of a set of
alternatives, to manipulation of the order in which pairs of alternatives are
voted on -- agenda-manipulation. We exhibit an agenda strategy called insertion
sort that allows a self-interested committee chair with no knowledge of how
votes will be cast to do as well as if she had complete knowledge. Strategies
with this 'regret-freeness' property are characterised by their efficiency, and
by their avoidance of two intuitive errors. What distinguishes regret-free
strategies from each other is how they prioritise among alternatives; insertion
sort prioritises lexicographically.
