Data are reliable when they are (1) complete (they contain all of the data elements and records needed for the engagement)2 and (2) accurate (they reflect the data entered at the source or, if available, in the source documents).
Data can be trusted only when both complete and accurate.
Data is only as reliable as you need it to be.
The man went without recognition.
The woman is wearing sunglasses.
The baby is wearing his bright green jumper and booties.
OK that is fine.
She is cleaning a toilet.
A dog eats an ice cream cone