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Unauthorized users , lacking the appropriate device or software and lacking knowledge of the secret key necessary to emulate such a device or software , can only guess at the response . " Individual student ' on demand ' access to campus networks is seriously deficient due to either the lack of student ownership of computers , lack of access from campus dormitories or concentration of resources in selected locations , " the study said . People that do not exhibit these problems are categorized as “ situationally homeless ” because of a lack of job skills , lack of education , and other factors ( 1995:435 ) . In general , people who are naturally shy are nervous in situations that involve a group of people , lack assertiveness , and have trouble making new friends and trying new things . Terrorist-supporting nations , lacking nuclear weapons and the huge military might of the United States , choose other avenues of war to achieve their ends , Cordesman said . In fact , due to a number of problems such as lack of English language skills , lack of supervision and positive role models , cross-cultural conflicts , and family problems , some have given up , have dropped out of school , or have joined gangs .