It is possible to create breaking policies

[anth-volk]

Do the following:

• Go into the param editor
• Find a param that has one consistent default value into perpetuity (e.g., IRS income tax bracket 1)
• Click inside the value setter
• Hit Enter

This will create a policy that is an exact duplicate of current law, but encode as below:

{"status": "ok", "message": null, "result": {"id": 42986, "country_id": "us", "label": null, "api_version": "0.601.1", "policy_json": {"gov.irs.income.bracket.rates.1": {}}, "policy_hash": "fRRAN4rD7YhzIQwrAV7nejrO8hHkpj6/xdR1R7gu8+0="}}

You'll note no value has been set for the param. I'm not sure how the API would execute this, but it may be breaking. At the least, any API behavior is unexpected.