Durability
* allows doing less without having less.
* also depends on the severity of attack by fungi and insects, especially termites.
* becomes a problem in changing conditions, long days or races.
* can reduce the environmental costs of building by an order of magnitude.
* crucial element of waste prevention.
* does have a higher price, but durable goods can last a lifetime.
* has more to do with the chemistry of the finish than the number of coats.
* increases the less permeable the concrete mix is.
* is affected by the purity of clay used
  - almost unparalleled in natural materials
* is also a certain sign of quality
  - important to home buyers, especially aging baby boomers
  - an important factor in determining how to care for jewelry
  - based primarily on image stability
  - enhanced by sandwiching the metal layer between polyester and polyethylene
  - measured by fold and tear
* is one of aluminum's main advantages along with the fact that it is easily replaced
  - the most vital, yet neglected, aspects of building design
  - permanence
* is the capacity to withstand abuse
  - most important criterion used to define the quality of a gear
  - question in development of any new engine
  - very important for rail vehicle components like bogie frames
* means productivity and lower unit costs, and retained value at the end of product life
  - that any changes committed by a task persist
* refers to certain lasting qualities with respect to folding and tear resistance.
* tops the list of properties that restrict the use of wood-based composites.
* very important concern in using concrete for a given application.
+ Terrazzo, Terrazzo and Sustainability: Materials
  * Durability is at the core of green construction. Terrazzo flooring can be refinished repeatedly, reusing instead of replacing materials. It can be restored to its original luster at a fraction of the cost of replacement. Even century-old floors have generally proven need little more than minor repairs and refinishing to return them to their original beauty.

### durations:

Brevity
* is durations
  - often the soul of wit
  - style
  - the mark of mercy in the hour of the chastisement of believers
* is the soul of acronyms
  - e-mail
  - lingerie
  - power pop
  - superficiality
  - the web
  - wisdom
  - wit and good answers
+ Combat stress reaction, Present-day treatment and diagnosis: Conflicts :: Mental illnesses
  * Brevity is the initial rest period. Many soldiers return to duty after this brief rest. More seriously affected patients are referred to the next level. Immediacy is essential for treatment. Intervention should occur as soon as symptoms appear. Contact with the service-member's unit can help the soldier feel like a war fighter rather than a patient.

### duties:

Moral obligation
* applies directly to our ultimate motive, intent, or purpose.
* concerns an observer's responses.
* is duties
  - responsibility

### dying art form:

Engraving
* Are also art sites on flat exposed rocks and sandstone ridges.
* are art forms
  - cuttings
  - located in plates
  - marking
  - printmaking
* dying art form.
* highly skilled form of raised printing.
* involves the cutting of copy or a design into a metal plate.
* is an art in itself and has the same expressive force as painting.
* is done on different metals such as copper, brass, silver, gold and also some alloys
  - with the use of small, hand-engraving tools
  - expensive to produce
* is the art of incising lines, or designs, on a hard surface with a sharp tool
  - most expensive, traditional and formal type of printing
  - used for fine or pictorial work
* makes stolen property easier to identify and harder to sell.
* process in which a plate is marked or incised with a tool called a burin.
* technique in which the artist draws grooves in a copper plate.
* very old print medium.