Charles was such a fun, warm and fascinating character. He will be missed. I always enjoyed chats with him, which inevitably ended down an unexpected rabbit hole. Charles loved learning and experimenting. He once told me he had been learning how to cut hair and I agreed to let him cut mine in the hardware lab. It wasn’t entirely successful. I asked where he was learning - he said he had borrowed a book from the library. All was not lost though. The cut was so bad my family paid for a professional haircut when I went home. Result! Thank you for so many memories Charles.