I explained with the first usage - the reference was to spare (or changing) alibis.
But there is an element of groundhog day about these exchanges.
It's a curious attempt an intellectual judo that the pro-guilt side sometimes try, although it's best presented as obliquely as possible so as to conceal exactly what is being argued, since what exactly is being argued is very silly.
When there are two or more excellent reasons to believe a given guilter talking point is nonsense, one possible (although totally specious) response is to say "Why do you need
two reasons to dismiss our talking point, hmm? Surely if either of them was any good you would only need one? No jury is ever going to believe you if you have
two reasons to dismiss a given claim as nonsense!".
In this particular case we point out that Since Curatolo claimed he saw Amanda and Raffaele from 9:20pm or so onwards, and Amanda and Raffaele were at home until at least 9:10pm, Amanda and Raffaele cannot possibly have murdered Meredith
if Curatolo is accurate given that she died during the period where we know Amanda and Raffaele were not at the murder scene. Then we point out
in addition that the computer evidence puts the two of them at home all night, so Curatolo is lying or mistaken.
Platonov's attempt at a gotcha is to pretend that we are simultaneously arguing that Amanda and Raffaele were in front of Curatolo and also at home (which we are not), and then jump from this to the conclusion that since there are
two excellent reasons to believe that Amanda and Raffaele were not at the murder scene, and one plus one equals zero, that adds up to no alibi at all.
It's quite an awkward fork Platonov is caught in, really.
1. If the evidence-based time of death cannot be moved back to 23:30, and it can't, and Curatolo is a sound witness, then Amanda and Raffaele are innocent because Curatolo gives them an alibi.
2. If Curatolo is not a sound witness, then there is absolutely no evidence that Amanda and Raffaele were not at home at the time of the murder, so their alibi is sound.
3. Therefore to maintain a guilter narrative Platonov has to simultaneously maintain that Curatolo is a sound witness,
and that the evidence-based time of death is 23:30, but both of these ideas have been hammered flat.
4. So what's left? Only the Chewbacca Defence - spread as much confusion as possible and act like you presented a compelling argument. Talk about Macavity and pretend that having a sound alibi even if you believe Curatolo, plus a sound alibi if you think Curatolo is a worthless witness, equals not having any alibi at all.
Sherlock Holmes (the fictional character, not the forum poster who uses that name) said that once you eliminate the impossible, whatever remains, no matter how improbable, must be the truth.
Platonov's version of that dictum would be that while you can eliminate the things that are impossible once, if something is impossible twice then it must be the truth.