The real problem is word of mouth. 90% of the group had never heard of meetup before, but a friend in the group encouraged them to join.

People have horrible taste in friends.

In any case, it's not just in my group - there is a reason the poor ranger in Evolution was soooooo exasperated when he explained to us (for probably the 1,000 time that day) that going in the alpine when a storm was due in any minute was foolhardy. I think we made his day when we told him if it was still storming we'd go back instead of forward.

We watched at least a dozen JMT hikers in shorts and tank tops hiking through the driving rain toward the basin at dusk. Clearly lightning or hypothermia is nothing compared to the horrors of being late to Whitney.