I also lost a friend who was very influential among us this year. The death was so sudden and guessing from his tweet before his death, it was probably cerebral

I also lost a friend who was very influential among us this year. The death was so sudden and guessing from his tweet before his death, it was probably cerebral apoplexy or similar sudden brain damage. If you have a friend not keep in touch of years, you should consider to have a little chat sometimes because you never knew he or you still alive tomorrow.