It has something to do with a famous mathematician.

and “Who needs men?”

while bonding and promising to fire off the show.

Natalie Bolton, Parvati Shallow, Cirie Fields, and Amanda Kimmel on ‘Survivor: Micronesia’

Natalie Bolton, Parvati Shallow, Cirie Fields, and Amanda Kimmel on ‘Survivor: Micronesia’.Monty Brinton/CBS

But by the end of theSurvivor 47episode, Caroline was out of the game.

So why is it that successful men’s and women’s alliances are so rare onSurvivor?

It’s a topic that hostJeff Probstwas asked about on the latest edition of hisOn Firepodcast.

Jeff Probst on ‘Survivor 47’

Jeff Probst on ‘Survivor 47’.Robert Voets/CBS

“Historically, we really haven’t had that many gender-based alliances,” Probst notes on the podcast.

‘Do we even think the same way strategically?

Do I trust you?'"

Probst continues: “It can’t be ‘I trust you because we’re the same gender.’

So there are just a lot of variables that go into forming a great alliance.

The host also says the faster pace and condensed gameplay of the 26-day season plays a factor.

“Most noticeably is it’s just constantly shifting because the game is now played in moments.

And one moment… can change the entire game.

It’s one of the hallmarks, in fact.

And that, the host believes, is when alliances no matter the gender turn on each other.

To hear more from Probst on the latestSurvivor 47episode, check out the new installment ofOn Fire.