Which makes the following sub-header from the front page of boston.com particularly odd:
A witness saw Christopher Piantedosi allegedly stab his ex-girlfriend in their daughter's room via a videochat on an iPad.
It's sensible to say that Piantedosi allegedly stabbed his ex-girlfriend; it means that, according to police, Piantedosi stabbed his ex-girlfriend. But I'm not at all sure what it would mean for someone to see Piantedosi allegedly stab someone. (She saw the police allege that he stabbed her?) Perhaps this witness can see into possible worlds, in which case we really need to get her into a lab to do some experimental semantics.