What do Option Strict On and Option Explicit On help catch in VB.NET?

Option Explicit On requires variables to be declared before use, helping catch misspelled names. Option Strict On rejects implicit narrowing conversions, late binding, and certain implicit typing that results in Object. It still allows appropriate local type inference with Option Infer On. Use explicit conversions only when their possible loss of information is intentional and handled. These settings move many errors from runtime to compilation, but do not prove that business logic is correct. Set project defaults consistently rather than relying on an individual developer’s editor configuration.