[Angelino97]

To me that’s as much a conspiracy theory as saying 9/11 was an inside job.

To ignore a threat is not an "inside job."

Extraordinary claims require extraordinary evidence.

Agreed.

I consider this circumstantial evidence to be pretty extraordinary:

1. Mossad is an excellent intelligence agency, with moles inside every Arab government and terrorist group, and friendly nations, across the world.

2. Israel has excellent border walls, sensors, and other high tech, such that a pigeon couldn't fly over the wall without the IDF knowing about it. (So they say.)

3. This terror attack involved over a thousand fighters and planners, with perhaps months or years of planning. Yet with all their informants, with all their high tech gear, the Mossad and IDF knew nothing?

That's pretty extraordinary.

[Telepathic Intruder]

I suppose some evidence is there, but like you also said they probably didn’t expect the sheer size of the operation that actually unfolded.

[Seruzawa]

Modern surveillance is extremely dependent on electronics. If Hamas planned everything with no electronic communication devices involved then that would go a long way to defeating Mossad.