Unfortunately, few of the artists ( writers, movie producers, dramatists and musicians ) who have used American folklore since 1900 have known enough to distinguish between the two streams even in the most general of ways.

Unfortunately, most operators are not commutative.

Unfortunately, some of the most commonly occurring disorders, such as heart disease, high blood pressure, Alzheimer's disease, arthritis, and diabetes, are caused by the combined effects of variations in many genes.

Unfortunately, most lubricant that ends up directly in the environment is due to general public discharging it onto the ground, into drains and directly into landfills as trash.

Unfortunately the worldwide Great Depression of the time, triggered by the Wall Street Crash of 1929, meant that most of the plans remained on the drawing board.

Unfortunately, however, with the advent of artificial island development, most of their habitat is destroyed, or occupied by man-made structures.

Unfortunately, ambitious and uncalculated construction schemes, political unrest and an ever present international conflict, and presence of the most lucrative world supply of oil, along with lack of cooperation between Arab states and Iran, has had a negative impact on the survival of many marine species, including dugongs.

Unfortunately the superconducting properties of most materials break down as current increases, at a level known as the critical current.

Unfortunately, most long-distance communication channels cannot transport a DC component.

Unfortunately, the pressure also subtly degrades the image in the plate, smoothing the roughened areas and closing the lines ; a copper plate is good for, at most, a few hundred printings of a strongly etched imaged before the degradation is considered too great by the artist.

Unfortunately, the once-promising plan was for the most part a disappointment.

Unfortunately, high excursion, at high power levels, tends to produce more distortion from inherent mechanical and magnetic effects in electro-dynamic drivers ( the most common sort ).

Unfortunately programs could not switch directly between them, so eventually, some new memory-model APIs were developed, VCPI and DPMI, the latter becoming the most popular.

Unfortunately, most of the writings of the Báb have been lost.

Unfortunately, many patients, not realizing the need for dental treatment, do not see a dentist until most of their teeth are beyond the point of restoration.

Unfortunately, the fact that a character was stored in a byte led to the two terms being used interchangeably in most documentation.

Unfortunately, most of his officers and soldiers were tired of the delaying tactics and demanded another attempt at an open battle.

Early administration of anthelmintics, such as mebendazole or albendazole, decreases the likelihood of larval encystation, particularly if given within three days of infection Unfortunately, most cases are diagnosed after this time.

Unfortunately, he has never learned how to make hooks with a barb, and so most of his fish escape.

Unfortunately all marks, for the most part were gone and he had to lay the whole town markings out again.

Unfortunately, in the early morning hours of November 3, 1908, a fire swept throughout Savannah and destroyed most of the village.

Unfortunately, since it is indeed a small town with limited infrastructure, the city has lost most of its business to Walla Walla, Washington just to the north.

Unfortunately, years later a fire burned most of this building down.

Unfortunately, Groom's vision of the finest and most desirable cattle ranch in the United States did not materialize for him.

Unfortunately, Blakey doesn't choose to work much of the time in this vein.

Unfortunately, Abbey became ill with cancer in 1911 slowing his work.

Unfortunately, at this critical juncture, he was unable to procure the necessary supercomputer time to continue his work.

Unfortunately, Indian mathematics remained largely unknown in the West until the late eighteenth century ; Brahmagupta and Bhāskara's work was translated into English in 1817 by Henry Colebrooke.

Unfortunately it is not likely that this arrangement will actually work to contain the fuel, since the ratio of ionization to particle momentum is not favourable.

Unfortunately, light pollution forced USNO to think of other more viable locations to continue work, and so began a search.

Unfortunately for Jones the medical establishment of Edwardian Britain was resolutely antagonistic to Freudian theory and in this context Jones ’ s early attempts to employ psychoanalytic insights in his clinical and research work proved less than circumspect.

Unfortunately, Scott did not base his translation on the best available Latin versions, and his work was severely criticized.

Unfortunately, although considerable development work was performed on the balloon and its subsystems, Russian financial difficulties pushed the Mars probe out from 1992, then to 1994, and then to 1996.

Unfortunately, Marsh died ( 1899 ) before the work was completed, and John Bell Hatcher endeavored to complete the Triceratops section.

Unfortunately only the first five books from this work have survived until the present day, with the text on Titus's and Domitian's reign entirely lost.

Unfortunately, Señor Aguilár died six years into the project ; his work was carried on by the padres and their charges, who made their best attempts to emulate the existing construction.

Unfortunately because he was not a catholic but a Protestant, the church did not allow him to sign his work.

Unfortunately, their small enrollment and success in finding work outside their reservation led to an attempt by the government to terminate their federal status in 1952.

Unfortunately, ill health plagued both the Clarke brothers, and worn down by the pace of their work, and perhaps the toxic chemicals used in stained glass production, both died within a year of each other — Harry second in early 1931, of tuberculosis while trying to recuperate in Switzerland.

Unfortunately Rodríguez de Montalvo allowed the original manuscript to disappear, or lost it, and only a few pages were discovered in Spain by Antonio Rodríguez Moñino, Peofessor at the University of California, Berkeley, evidence of the lost XIII century's work.

Unfortunately, Belew's experience with Tom Tom Club was less harmonious than his previous work with Talking Heads.

Unfortunately, most of his work survives only in the quotations of his opponents.

Unfortunately the laws reduced the mobility of labour and discouraged paupers from leaving their parish to find work.

Unfortunately, her creations don't always work the way she intends and have sometimes failed at just the wrong moment to cause the team trouble.

Unfortunately, the move to RCA did not work out because the person who had signed them there moved to another label shortly thereafter, and his replacement wanted to promote Alabama more than the Oak Ridge Boys.

' Unfortunately his score for the work has not survived.

Unfortunately, she was that same person at home, where that kind of conduct doesn't work.

Unfortunately, the machine was non-functional for at least two months of the installation, leading World Sculpture News to question the intent of the piece and remark that " the work illustrated that robots, in fact, don ’ t rule everything, and for the time being, are still subjected to individual and groups shortcomings.