Social sickness by COVID-19

Many people may have been tired of COVID-19. These days I often see even the smart people making very aggressive criticisms and odd claims. I don't think we should argue about things we are not experts in as if we know them. We should respect with experts. But,...


Now is the time

It is quite hard era though, this is not the time to grow old or be negative. I need to be proactive and challenging for my families, students, and myself.


SNS has been a bothersome one...

Notes on FB sometimes become a couse of unexpected arguments. I feel some people (even smart people) on FB tend to be cheap-judgemen. It is very bothersome to have discussion with them. I think discussion on FB is meaningless. So, when I want to write a note, I will put it here.