Presumptions are conjectures from probable proof, assumed for purposes of evidence.

Explanation

Presumptions are inferences drawn from probable signs, adopted as proof until rebutted — they serve the tribunal by supplying what direct evidence cannot always furnish.

Where this applies

• A court presumes that a letter properly addressed and mailed was received — this is a conjecture based on the probable sign (proper mailing) adopted as proof until the recipient shows otherwise.
• The law presumes a child born during marriage is legitimate — this is an inference drawn from the probable circumstance (marriage) that stands until rebutted by contrary evidence.
• A court presumes that a business transaction conducted in the ordinary course was lawful — the probable sign of regular business practice supports the presumption until someone produces evidence of wrongdoing.