The launching of The Journal for the Psychology of Language Learning is a signal achievement. I begin this commentary by speculating on why it is that the Psychology of Language Learning (PLL) has enjoyed such vigor of late. I expect that one reason is the coming together of a critical mass of researchers and strong leaders over their shared interests. A second reason may be that a new way of looking at familiar phenomena was introduced in the form of complex dynamic systems theory (CDST). Building on this supposition, I proceed to recommend extending CDST thinking in some new ways in PLL. These ways are phenomenological, relational, processual, and transdisciplinary. I conclude by urging the PLL community to remain connected with other areas of applied linguistics so that it may continue to contribute to a knowledge-building community.