A spokesman for the Fair Play group, which campaigns against boycotts of Israel, described the scientist's withdrawal as "bizarre".
"Prof Hawking could have joined the conference and explained his views on the conflict in the region, just as many other participants have done.
"By boycotting the conference, he has thrown away this opportunity and will help nobody."
Hawking boycotts Israeli conference
From here. Even puzzles other dissenters.
Diogenes of Sinope: "It is not that I am mad, it is only that my head is different from yours."
Arnold Judas Rimmer, BSC, SSC: "Better dead than smeg."
Arnold Judas Rimmer, BSC, SSC: "Better dead than smeg."