The argument being, couriers have a less specialized skillset making person 6 easy to replace, whereas with greater individual resources, the meth cook would be harder to substitute.
Our findings thus support recent theoretical propositions about the NPE business model, showing that NPEs procure patents that are more likely to be infringed, harder to substitute for, and robust to legal challenges.
It is much harder to substitute bypass surgery with a hernia operation than it is to eat more chicken and less beef.
The Bureau of Labor Statistics has found that seniors spend proportionally more of their income on medical care and housing, which in addition to rising more rapidly than most other costs, are also much harder to substitute with other products.
In fact, many seniors and people with disabilities spend more of their income on health care (where inflation is usually higher) and necessities (which are harder to substitute) than other Americans.
Opponents of the bill had said it would make it harder for pharmacists to substitute cheaper copies for the brand-name versions of biotech drugs, some of which can cost tens or hundreds of thousands of dollars a year.
They, of course, fail to mention that since INNs enable generic substitution, assigning unique names to biosimilars would also make it a lot harder for pharmacists to substitute them, which, in turn, would protect the industry's profits.
When an employee is unavailable to serve her client, her expertise in that particular case makes it hard for the employer to substitute her with another employee.
Besides the added bonus of chocolate, that cake fit all my requirements with the exception of calling for two eggs (hard) and butter (easy to substitute).
