Changes

=== 20th century Vienna and "exact thinking" ===

=== 20th century Vienna and "exact thinking" ===

[[File:Vienna Graben.jpg|thumbnail|right|300px|Graben Street in [[Vienna]] ]]

[[File:Vienna Graben.jpg|thumbnail|right|300px|Graben Street in Vienna ]]

''See also:'' [[Rational thinking]] and [[Logical reasoning]] and [[Analytical thinking]]

''See also:'' [[Rational thinking]] and [[Logical reasoning]] and [[Analytical thinking]]