Amendment and Waiver. The provisions of this Agreement may be amended or waived only with the prior written consent of Adtalem and the Executive or pursuant to [Section 17], and no course of conduct or course of dealing or failure or delay by any Party hereto in enforcing or exercising any of the provisions of this Agreement will affect the validity, binding effect or enforceability of this Agreement or be deemed to be an implied waiver of any provision of this Agreement.