Body language is a big part of human interaction, but some folks out there have a tougher time reading it than others. If you're looking to join in on a conversation that's already in motion, the participants' feet can tell you whether it's open to others or not.
Photo by adamclyde
If two people are in the middle of a conversation, the last thing you want to do is interrupt. Andrian, author of Speak Like a Leader and writer at Social Dose, suggests you pay attention to everyone's feet as you approach:
If they turn only their torsos and not their feet, it means they are in the middle of an important conversation and they don't want you to interrupt them. If they turn both torso and feet, it means you are welcome.
This may not be the case for every single scenario, but body language is usually more telling than our own words. There's nothing wrong with approaching and making an attempt to join in, but be aware of the way people react to you and take the hint.