Consistency or best ui control?

1. What is the consistency of UI?
2. How does consistency affect GUI?
3. Why is consistency the most important design principle?

What is the consistency of UI?

But what exactly is consistency in UI design? Consistency in UI design is concerned with making sure elements in a user interface are uniform. They'll look and behave the same way. This helps constantly prove a user's assumptions about the user interface right, creating a sense of control, familiarity, and reliability.

How does consistency affect GUI?

Increased usability. Because users don't have to learn new ropes to go about, consistency makes it easier for them to navigate and use applications. They know what to expect because they've learnt it somewhere else will find it easier to explore and use the app if the UI designs are consistent.

Why is consistency the most important design principle?

It helps design work communicates clearly and look professional - Consistency looks professional and helps to ensure design work is communicating the intended message. A lack of consistency in design elements, sizes, colours etc can leave people confused and compositions looking messy!