[
  {
    "key": "upgrade-thesissupervision",
    "name": "Thesis supervision",
    "description": "Somebody takes care of your PhD Students.",
    "effect": "PhD Students produce an additional 3 data per second.",
    "icon": "fa-group",
    "cost": 1000,
    "targets": [{"key": "workers-phdstudents", "property": "rate"}],
    "requirements": [{"key": "workers-phdstudents", "property": "hired", "threshold": 5}],
    "constant": 3
  },
  {
    "key": "upgrade-owndesk",
    "name": "Own desk",
    "description": "Not having to share one is a blessing.",
    "effect": "PhD Students produce twice as much data per second.",
    "icon": "fa-group",
    "cost": 10000,
    "targets": [{"key": "workers-phdstudents", "property": "rate"}],
    "requirements": [
      {"key": "upgrade-thesissupervision", "property": "used", "threshold": 1},
      {"key": "workers-postdocs", "property": "hired", "threshold": 1}
    ],
    "factor": 2
  },
  {
    "key": "upgrade-mentoring",
    "name": "Mentoring",
    "description": "Weekly counseling with a professional physicist.",
    "effect": "PhD Students produce twice as much data per second.",
    "icon": "fa-group",
    "cost": 100000,
    "targets": [{"key": "workers-phdstudents", "property": "rate"}],
    "requirements": [
      {"key": "upgrade-owndesk", "property": "used", "threshold": 1},
      {"key": "workers-fellows", "property": "hired", "threshold": 1}
    ],
    "factor": 2
  },
  {
    "key": "upgrade-studentassistant",
    "name": "Student Assistant",
    "description": "A personal assistant that takes care of boring tasks.",
    "effect": "PhD Students produce twice as much data per second.",
    "icon": "fa-group",
    "cost": 1000000,
    "targets": [{"key": "workers-phdstudents", "property": "rate"}],
    "requirements": [
      {"key": "upgrade-mentoring", "property": "used", "threshold": 1}
    ],
    "factor": 2
  },
  {
    "key": "upgrade-summerlectures",
    "name": "Summer Lectures",
    "description": "Interesting lectures given by the best in the field.",
    "effect": "Summmer Students produce an additional 3 data per second.",
    "icon": "fa-group",
    "cost": 1000,
    "targets": [{"key": "workers-summies", "property": "rate"}],
    "requirements": [{"key": "workers-summies", "property": "hired", "threshold": 5}],
    "constant": 3
  },
  {
    "key": "upgrade-postersessions",
    "name": "Poster Sessions",
    "description": "Have your Summies prepare interesting posters and explain them to their peers.",
    "effect": "Summer Students produce twice as much data per second.",
    "icon": "fa-group",
    "cost": 10000,
    "targets": [{"key": "workers-summies", "property": "rate"}],
    "requirements": [
      {"key": "upgrade-summerlectures", "property": "used", "threshold": 1}
    ],
    "factor": 2
  },
  {
    "key": "upgrade-bbqs",
    "name": "Barbecue",
    "description": "A nice get-together to increase morale in the group.",
    "effect": "Summer Students produce twice as much data per second.",
    "icon": "fa-group",
    "cost": 100000,
    "targets": [{"key": "workers-summies", "property": "rate"}],
    "requirements": [
      {"key": "upgrade-postersessions", "property": "used", "threshold": 1}
    ],
    "factor": 2
  },
  {
    "key": "upgrade-parties",
    "name": "Pump Hall Parties",
    "description": "Awesome parties in the CERN pump hall. Sure the hangover does not increase productivity but your morale gets a huge boost.",
    "effect": "Summer Students produce twice as much data per second.",
    "icon": "fa-group",
    "cost": 1000000,
    "targets": [{"key": "workers-summies", "property": "rate"}],
    "requirements": [
      {"key": "upgrade-bbqs", "property": "used", "threshold": 1}
    ],
    "factor": 2
  },

  {
    "key": "upgrade-coffee",
    "name": "Free coffee",
    "description": "Addictively delicious. Also free.",
    "effect": "All workers produce twice as much data per second.",
    "icon": "fa-group",
    "cost": 1e6,
    "targets": [
      {"key": "workers-phdstudents", "property": "rate"},
      {"key": "workers-postdocs", "property": "rate"},
      {"key": "workers-fellows", "property": "rate"},
      {"key": "workers-profs", "property": "rate"},
      {"key": "workers-nobel", "property": "rate"},
      {"key": "workers-summies", "property": "rate"}
    ],
    "requirements": [
      {"key": "workers-phdstudents", "property": "hired", "threshold": 1},
      {"key": "workers-postdocs", "property": "hired", "threshold": 1},
      {"key": "workers-fellows", "property": "hired", "threshold": 1},
      {"key": "workers-profs", "property": "hired", "threshold": 1},
      {"key": "workers-nobel", "property": "hired", "threshold": 1},
      {"key": "workers-summies", "property": "hired", "threshold": 1}
    ],
    "factor": 2
  }
]