Research suggests several positive benefits of inviting a guest speaker to the classroom/lecture as a pedagogical tool. The use of guest speakers can encourage an active learning environment. Students are prompted to use critical thinking and will benefit from hearing how to apply the theoretical concepts to which they are being exposed. (Riebe et al., 2013).
Riebe, L., Sibson, R., Roepen, D. and Meakins, K. (2013). Impact of Industry Guest Speakers on Business Students’ Perceptions of Employability Skills Development. Industry and Higher Education, 27(1), pp.55-66.