Just because you think the conclusion is irrational does not mean that it is. It's all down to personal opinion. Neither decision seems right really, they both have their pros and cons. For me, the decision was based around the assumption that Larry was dead and that even if by some small chance he was alive, it was too much of a risk to take. I'll repeat though that this is just my opinion and neither decision can be definitively classed as right or wrong.