[James.]

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This is difficult because it is circular.

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all multiway pots have this effect.

most of the significant equity changes come after the flop, but this phenomenon is still present.

for instance, compare a multiway pot with one person holding top pair, another holding a nut flush draw, and some other opponent(s) with various crap(draws, pairs, whatever).

the flush draw makes money off of every additional person that enters the pot. it can actually cost the top pair hand money as people enter. so the flush draw welcomes players, the top pair resists them.

understanding how these equities intertwine is crucial to success at limit hold em.