31. Many years ago, I set up formal systems to elicit constructive criticism from my subordinates. 32. However, more complex formal systems , such as systems of mathematical logic, may possess this ability. 33. In this view, logic becomes just another formal system . 34. A number of attempts have been made to specify the JVM as a formal system . 35. The unification of different views of formal systems was a constant theme in Ginsburg's work. 36. This technique allowed G�del to prove results about the consistency and completeness properties of formal systems . 37. A formal system of relief would make him or her " a whole person again ." 38. Others question whether formal systems are still necessary when farmers can just contact traders by phone. 39. When a formal system is used to represent formal logic, only statement letters are represented directly. 40. Hence any formal system including the Sheffer stroke must also include a means of indicating grouping.