The theory of transactional distance has been subjected to a variety of empirical tests and philosophical critiques. Throughout this process, the variable of dialogue has attracted much attention. Although dialogue has proven difficult to measure and define, it is widely regarded as an ideal outcome of the teacher-learner transaction. Considered from a constructivist perspective, dialogue can also be understood as an ideal outcome of classroom transactions among and between the learners themselves. Subject matter experts in post-secondary education responsible for designing, implementing and presenting classes online might consider the possibility of embracing constructivist pedagogy in order to create what Moore (1993) referred to as low transactional distance.