Q1:Do you think your lifestyle changed after having keitai? How did keitai affect your lifestyle? Q2: In this article, the author worries keitai won't develop human expression and conversation skills. What is your opinion? Q3: What do you think the issues related to ketai? For instance, victims under 18 about match dating sites. Do you think these issues are caused by the spread of keitai? Why or why not?