Expert opinions based on histories that differ from established facts remain admissible and may be accepted by a trial judge where the histories are 'sufficiently like' those established to render the opinion of value, particularly where the differences were exhaustively explored in cross-examination without causing the experts to resile. A trial judge's order for interest on costs to accrue from 21 days of filing of the bill of costs for assessment is within power under s 95(3) of the Supreme Court Act 1970 (NSW) and represents a permissible mid-point between the incipitur and allocatur rules. When calculating loss of chance of a pension, care must be taken to avoid double-counting heads of damage already separately awarded.
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