Engmann$$et al$.(2024)$ talk about change being inevitable and how change is triggered by internal and external tensions. How change takes on the form and complexity of the underlying problem. Can you help me summarize what they have to say about the above? $($Engmann$,$ A$.,$ Eluerkeh, E$.,$ & Ngwakwe, C$.(2024).$ Leading Change by Design $-$ Integrating Design thinking with Kotter$$s $8$ Step Process$).$