Simplify the following text for a Grade 13 native English-speaking person.
Original: In 1994 Lars Knudsen designed the technique , during this period ordinary differential cryptanalysis analyzes the full difference between two texts , the truncated version considers differences that are only determined to some extent .
Simplified: Lars Knudsen developed the technique in 1994 . Whereas ordinary differential cryptanalysis analyzes the full difference between two texts , the truncated variant considers differences that are only partially determined .