In 1922 most of the people of Ireland left the larger United Kingdom, but the Irish were divided. The UK today is leaving the larger European Union. The comparison gives grounds both for hope and for fear.
It is elementary that judges must adjudicate fairly between the litigants making and defending a claim. For this judges are helped by the litigants and their advocates. But judges must also be fair to witnesses, and to third parties who may be affected by a trial, even if they are not present. For this judges are on their own. Aggrieved litigants have clear rights of appeal. If witnesses or third parties are aggrieved, it may be much more difficult for judges, first to appreciate that fact in good time, and then, to find a remedy.