It is truly absurd that we constantly hear requests for the public not to speculate or talk on social media about certain topics due to ongoing legal matters. It is inefficient and lacks strategy completely, its both impossible to enforce completely and pretty immoral to punish people in the process of trying.
The Jury should be protected from being Tainted/corrupted, however you want to put it.
The Saying is to poison the well. To poison the well is refering to a comments that influence an opinion before a question is asked. Like describing something in a bias way, will influence a person to lean in that direction.
The Jury not being isolated during Jury Duty especially during high profile cases ensures the Jury will be corrupted and nothing can prevent that unless they are protected from it.