When not to use machine learning:
✅ Not enough data.
✅ A simple programmed solution works.
✅ No return of investment.
✅ AI is just sooo coool.
✅Little tolerance for mistakes in implementation or delivery.
✅ No budget for upkeep.
When not to use blockchain:
✅ When you think its free.
✅When you think that it is money.
✅ When you are unclear of the difference between private and public chains.
✅ Block chain is sooo hot right now.
✅The results are not mission critical.