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Listen , I do n't want any innocent Arab-Americans killed or hurt , but our first priority must be to show the monsters that attacked us some strength . The systems analyst 's amount of functional understanding of the problem domain , the dynamic nature of the problem domain being investigated , the dynamic nature of the business environment , communication issues , and human factors also contribute to the challenge . So far , testing of mycoherbicides to control coca has been limited to laboratory research and limited field testing in the U.S. Results have been promising : these tests identified a mycoherbicide that attacked only coca plants , killed them , and did not spread to any other host . The Palestinians have also attempted - but fortunately failed - to carry out acts of " mega-terrorism , " including attempted attacks on the the Pi Glilot gas and fuel storage facility near Tel Aviv and the truck bombing of Tel Aviv 's largest skyscrapers . The idea here is that the mother 's immune system will produce anti - bodies to foreign blood groups , which could attack a fetus with a different ABO phenotype . Such changes may seem inconsequential to most Christians , but each change was significant for WCG members because each change attacked strongly held beliefs about how we ought to express our devotion to God .