It's Friday on the medical wards . . . and once again, I am the utterly confused ward attending.The “bad” weekend is coming up: the pre-call resident is off today, because she is on long call on Saturday and will have to come in post-call on Sunday. She also happens to be post–short call from yesterday, and her absence today means she won't be part of attending rounds when her new cases are presented. Her interns, on the other hand, are here today but will not come in post-call on Sunday; only the resident will come in, and she . . .