Final prediction day has arrived, some relevant how the heck he faked his death images. The basic solution has got to be that Sherlock totally owned the street. The cyclist, the laundry truck driver, the people who surrounded the body were all Sherlock's Baker Street Runners / Homeless Network. The elderly lady was instructed to make sure Watson did not take a pulse properly. Watson did not see Sherlock fall and hit the pavement at full speed. Two main solutions - the suggestibility / fear enhancing chemical warfare agent from the Baskerville research establishment was administered to Watson OR who/what Watson saw wasn't Sherlock. One of the loose ends is the kidnapped child was terrified when she saw Sherlock. Presumably Moriarty or an associate disguised themselves to look like Sherlock. There are several possible levels of involvement for Molly, suggesting ways Sherlock could stop his pulse, providing a trolley and hospital gowns to the Baker Street Runners, tampering with postmortem results. Sherlock could have walked down the stairs with Molly chucking the fake Sherlock off the roof or Sherlock could have chucked the fake and then jumped onto laundry bags.