"If there was on thing I learned with this crises is that services are the first to go down." What are services? Does "manufacturing process engineer" qualify

"If there was on thing I learned with this crises is that services are the first to go down." What are services? Does "manufacturing process engineer" qualify as a service job, or manufacturing job? I always found the distinction to be silly and irrelevant. Services are demanded and supplied to support the economy, as are manufactured goods. (I'm not even talking public service here)