Mike W. Loader wrote:

On Tue, 11 Jun 1996, Philip Mak wrote:

About that time travel thing... that police inspector at the end was
going to say Kasumi Tendo got killed right? But if Kasumi's in the Tendo
Dojo, how can she be in the bad guy's house?

Hmm. Let me try to explain this in a coherent fashion.

SPOILERS:
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Here is the original sequence of events.

May 20 - Kasumi leaves for her seminar
May 21 - Ranma & Ryoga encounter Cerberus
May 22 - Gunshot wound to Ryoga, Bomb planted
May 23 - Dojo explodes, Kasumi returns home to find the rubble.

After Kasumi traved back to change history, the sequence looked like this.
(Kasumi2 is the one from the future.)

May 20 - Kasumi leaves for her seminar
May 21 - Kasumi2 arrives, Ranma & Ryoga encounter Cerberus
May 22 - Gunshot wound to Ryoga, Bomb taken by Kasumi2
May 23 - Bomb explodes, killing Cerberus and Kasumi2. Kasumi returns home.

The Kasumi from the future is killed in the blast. HOWEVER, as the Kasumi
native to that time period was in Osaka during the whole thing, she is
able to show up in the final scene.
   In fact, it is almost literally impossible to kill off the native
Kasumi, because it is established in the first half that she safely shows
up at the dojo to find it destroyed.exatly a paradox is prevented from forming because kasumi2 is killed and 

kasumi1 is alive.  If kasumi1 had died there would be no kasumi2 and if 
kasumi2 had lived then their would be two kasumis as kasumi1 would never 
become kasumi2 becuase she would lack a reason to go into the past.  The 
universe just sort of says look everything is ok.  no paradoxes ignore 
that little two day period nothing big is going on so what if one little 
part is odd nothing imposible is their.  
or so i take it to be
skywise
shade and sweet water to you all