If the patient has already eaten the meat, discarded the package, or removed the label, the link becomes difficult to make, and officials can't request a voluntary recall.
But there is a risk, as Carole Levenson of Gimme Credit noted, that companies might use the S.E.C. rules to change the information they provide so that it could "become difficult to make any kind of meaningful historical comparison".
They tend, like any art form, to have some practical boundaries beyond which they become difficult to make work.
There is so much unlearning to do that it becomes difficult to make space to form new perspectives, but it is crucial that we do so.
Thus, it becomes difficult to make interpretations of human pathophysiology based on extrapolations of murine systems, especially after the induction of cardiovascular stress.
Unfortunately, with the proliferation of systematic reviews on the same topic, it becomes difficult to make informed decisions regarding the effects of various interventions on selected outcomes.
"But when you really start drilling down into that concept of a biomarker, it can become difficult to make that differentiation".
One reason was rising costs: as America became increasingly market-oriented, it became increasingly difficult to make features on such microscopic budgets.
It had been thought the law could finally be disproved as it became too difficult to make ever smaller transistors.
But her job options were limited by broken English, she explained, her husband was usually drinking, and with a child it became too difficult to make rent.
