Byrne: One of our club' s bylaws specifies that any officer who fails to appear on time for any one of the quarterly board meetings, or who misses two of our monthly general meetings, must be suspended  Thibodeaux, an officer, was recently suspended  But Thibodeaux has never missed a monthly general meeting
Ttherefore, Thibodeaux must have failed to appear on time for a quarterly board meeting
presumes, without providing justification, that if certain events each produce a particular result, then no other event is sufficient to produce that result