The role of experts and their testimony in highly technical
matters is indispensable. An expert is generally relied upon to
prove or disprove a fact, usually of a complex nature such as one
pertaining to technology, financial accounting, foreign law, trade
practice or forensics.
For example, when the subject matter of any litigation relates
to a patented technology in which the opinion of a person skilled
in that technology becomes relevant, experts take the
role of such skilled persons to prove or disprove a fact
relating to such technology.
Regardless of the importance of experts, there is no denying
that an adversarial allegiance of expert towards the party who
hires them is always suspected.