How about making the skills keys an anonymous array?

Katie => {
  age    => 24,
  skills => [
    'perl', 'java', 'C', 'XML', 'MySQL', 'PHP', 'bioinformatics',
    'genetic programming', 'chemical analysis',
  ],
  phone  =>  '310.xxx.xxxx',
  email  =>  'xxx@xxx.xxx',
},
[download]