I think so, laughter is very impotant things. By laugh is our makes happy. There is many tipe to laugh. For exmple, fake smile and seriously laughter etc... So I think really attractive. So I laugh at full power.
I think walking smartphone is very dangerous. If you have to use the smartphone, you should stop. That way it is not dangerous. It is safety for me to stop to use the smartphone. I think I want to take care. So I will do my best.