friends came to boston within this week. yuin arrived boston on tuesday and will prepare graduate school applications here. liutower also came to boston yesterday. hang out with friends in these two days is happy. although the shcool life is stressful, random talks and chats with close friends are pretty useful stuff to ease the stresses. sometimes, we need more meaningless chats than serious converstions. everything here at mit is sometimes way too serious and i am a serious person so i think that's why i could be here. but, i want to be a more relax person, do more bullshitting stuff like liutower does all the time. laughs and easiness are healthy.