Interleaved Parallel Thread Mode

How ThreadMode pages descend into hell:

Stage one

Cats are nice. I don't like dogs. Oxygen is good. -- JoeBloggs

Stage two

Cats are nice. I don't like dogs. Oxygen is good. -- JoeBloggs

I don't agree with you about cats. They're an abomination from hell. Also, dogs are the nicest animals on the planet. And oxygen is overrated. -- FredBlaggs

Stage three

Cats are nice. I don't like dogs. Oxygen is good. -- JoeBloggs

I don't agree with you about cats. How dare you! Cats are lovely, lovely, lovely. -- JB

They're an abomination from hell. Blasphemy! -- JB

Also, dogs are the nicest animals on the planet. Apart from dogs. And weasels. And everything else. -- JB

And oxygen is overrated. -- FredBlaggs Provided you don't care about breathing, anyway. -- JB

Stage four

Cats are nice. I don't like dogs. Oxygen is good. -- JoeBloggs

I don't agree with you about cats. How dare you! Cats are lovely, lovely, lovely. -- JB

What's so great about cats, then? I think they're boring. -- EthelFnord

They're an abomination from hell. Blasphemy! -- JB

There's nothing blasphemous about that. -- EthelFnord

Also, dogs are the nicest animals on the planet. Apart from dogs. And weasels. And everything else. -- JB

I don't understand. Joe, do you like weasels or not? JaneDoe

And oxygen is overrated. -- FredBlaggs Provided you don't care about breathing, anyway. -- JB

Perhaps Fred breathes something other than oxygen? -- EthelFnord

At this point, there is absolutely no possibility of coherence unless someone comes along and refactors mercilessly (RefactorMercilessly).