Revert "Coursera"

This reverts commit e2520a48457a288e78cb6f69c9a2e6ffa94a0195.
Revert "Revert "Coursera""

This reverts commit ad49c8a73fe522a2288662d410bf7cf03d4e1670.
Revert "Revert "Revert "Coursera"""

This reverts commit 206b6b9773bb8fe4d5e306b0ce93c6e256a3d94a.