Although extremely useful for visualizing high-dimensional data, t-SNE plots can sometimes be mysterious or misleading. By exploring how it behaves in simple cases, we can learn to use it more effectively.
W. Chen, J. Chu, J. Luan, H. Bai, Y. Wang, and E. Chang. Proceedings of the 18th international conference on World wide web, page 681--690. New York, NY, USA, ACM, (2009)