Is this sentence correct:
"The invited expert taught the company's staff new knowledge."
No. " That cannot be taught. We teach courses, classes, skills, techniques, material, and problem-solving.
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No. Knowledge is "what you know."
That cannot be taught.
We teach courses, classes, skills, techniques, material, and problem-solving.
If someone goes to a course, and actually learns something, they increase their knowledge on some subject.
Study the dictionary entry on "knowledge"