Radiometric dating and relative dating
The Duggar parents often accompany their kids on dates in order to maintain "accountability" and "keep things from going in the wrong direction," per Jim Bob.
The girls are fine with this, as being alone with men puts them in grave "moral danger." When the parents aren't available, their older siblings will often tag along, making every date a group date and a family affair.
For example, the presence of recycled bricks at an archaeological site indicates the sequence in which the structures were built.
Similarly, in geology, if distinctive granitic pebbles can be found in the sediment beside a similar granitic body, it can be inferred that the granite, after cooling, had been uplifted and eroded and therefore was not injected into the adjacent rock sequence.
The Duggar family's unusual dating rules have been well documented, and have been well before the family was embroiled in scandals.
It was an abrupt and stunning fall from grace when Josh Duggar's child molestation history - and rampant adultery - was first exposed.
But one of the most bizarre was revealed only recently in an episode in which Joseph and Kendra Caldwell officially started courting. with one of the younger Duggar sitting in between them in the front seat of a pickup truck.
Shortly after the courtship "proposal," she was allowed to slide almost all the way over to Joseph.
When Ben Seewald jokingly wrote to fiancee Jessa, "Give me a ring," Jim Bob actually jumped in on the group text, writing "No ring yet." With a smiley face emoticon. Whatever you think of him, Jim Bob needs his own Instagram so he can start posting screen shots of this stuff.
This moment you see here between Jill Duggar and Derick Dillard would not have been permitted until the couple was married. It’s no secret that the Duggars have strict dating rules.