I can call this flop right?

[Fadook]

[ QUOTE ]

uh hero played the hand fine, the call preflop is something you really should be making

[/ QUOTE ]

I've been reading a number of posts from experienced board members/players who advocate similar actions, and I really don't get it. I'm not criticizing any of you guys, but I'd really like to see an explanation of the thought process. In this case, a TAG has raised, and there are three players already in the pot. How can 57s really have sufficient equity to call in these circumstances?