I was on the phone today talking to someone when I realized that I had not had any real human contact outside of say meeting with my advisor and running into someone from sociology since Monday . Its kinda scary how the days on the calendar just fall off that fast . I have n't really spoken to anyone in person that did n't have to do with my withdrawal or ordering food since Sunday .

Based on the preceding passage, answer the following question Why have n't you talked to anyone since Sunday ?
I was so buried in my work , I have n't had a chance to talk to anyone .