Been here many times, both during the day and afte...

Been here many times, both during the day and after dark. The last after dark event was so awful, we left after one hour. Not sure if I will pay to go again. Seriously, the Exploratorium needs to go to museums like the science museum in London to see how to get the SF Exploratorium off the ground. They couldn't even get the mics to work for the guest speaker for the first hour!