Depending on what you are trying to accomplish in your model, seeing certain types of information will be more or less helpful for your needs.
Example: Named Hires record model.
What if you want to see the employee with a salary higher than 60,000? What if all you care about is each employees' start date? What if you are going to see the department of each employee?
Rather than painstakingly scanning through all of the available information you have put into the model, you can instead apply filters, hide extraneous columns, or sort your records to bump the most pertinent information to the top of the sheet. By creating different views with different criteria, you can focus on what is most relevant to you exactly when you need it.
You can think of a view as a custom lens for looking at the same underlying information: how you see the information changes, but the information that you're looking at stays the same. Whenever you hide or reorder columns, apply filters, or sort and reorder rows, those changes will only apply to your current view. However, if you make changes to the underlying data—like making a new row or column, editing the data of a row, customizing a column, and deleting a row or column—those changes will apply to all views.
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