Amy helps Sheldon see the situation from a different perspective, noting that if Tam had moved with him, Sheldon might never have bonded with Leonard and the rest of the gang.
: According to Sheldon's list, Tam simply "knows what he did". [S12E4] The Tam Turbulence
: The episode highlights how much Sheldon has grown and the value of his current "found family". Subplot: Meeting Anu Amy helps Sheldon see the situation from a
: Sheldon's friends (Leonard, Howard, and Raj) are shocked to learn Sheldon had friends before them. [S12E4] The Tam Turbulence
: Tam stayed in Texas after meeting a girl, leaving Sheldon to move to California alone.