Of 2,300 4-16 year-olds questioned about their use of libraries, 70% said they use their library once a fortnight or more, and 51 % at least once a week.
Recordings took place every fortnight, on average, hence the two corpora together comprise a total of 77 recording sessions with an approximate duration of 30 minutes each.
And at present, an unrecorded language is dying somewhere in the world every fortnight or so.
Her detailed examination of the scant surviving private sources indicates regular use, roughly once a fortnight.
Their daily nausea levels were assessed for a fortnight using a simple questionnaire and an anti-emetic tablet count.
Every fortnight the musicians meet to plan the programme for the following two weeks.
The figure clearly reveals that sampling at weekly intervals resulted in less error than sampling on two consecutive nights per fortnight.
But where did this game that spellbinds us for a fortnight come from?
