  We use an extract from an interview concerning gravitational wave physics to
show that the meaning of hesitancies within speech are different when spoken
and when read from the corresponding transcript. When used in speech,
hesitancies can indicate a pause for thought, when read in a transcript they
indicate uncertainty. In a series of experiments the perceived uncertainty of
the transcript was shown to be higher than the perceived uncertainty of the
spoken version with almost no overlap for any respondent. We propose that
finding and the method could be the beginning of a new subject we call
'Language Code Analysis' which would systematically examine how meanings change
when the 'same' words are communicated via different media and symbol systems.
