Why did the Texas grid fail?

Can you elaborate on the reasons behind the failure of the Texas grid? Was it due to inadequate infrastructure, mismanagement, or extreme weather conditions? Were there any preventive measures in place that failed to address the issue? Additionally, how did this failure impact the energy supply and demand in the state, and what are the long-term implications for the grid's stability and reliability? Understanding the root causes and consequences of this event is crucial for preventing similar occurrences in the future.