  The example of disk galaxy rotation curves is given for inferring dark matter
from redundant computational procedure because proper care of astrophysical and
computational context was not taken. At least three attempts that take the
context into account have not found adequate voice because of haste in wrongly
concluding existence of dark matter on the part of even experts. This firmly
entrenched view, prevalent for about 3/4ths of a century, has now become
difficult to correct. The right context must be borne in mind at every step to
avoid such a situation. Perhaps other examples exist. Keywords: dark matter;
disk galaxy; rotation curve; context-awareness. Topics: Algorithms;
Applications.
