1. A cognitive information processing system comprising: a cognitive inference and learning system coupled to receive data from a plurality of data sources and to provide insights to a destination, the plurality of data sources comprising a social data source stored in a social data repository, a public data source stored in a public data repository, a licensed data source stored in a licensed data repository and a private data source stored in a private data repository, the cognitive inference and learning system executing on a hardware processor of an information processing system, the cognitive inference and learning system and the information processing system providing a cognitive computing function, the cognitive inference and learning system comprising a cognitive platform, the cognitive platform comprising a sourcing agent and a destination agent, the cognitive inference and learning system processing the data from the plurality of data sources to provide cognitively processed insights, the cognitive inference and learning system further comprising performing a learning operation to iteratively improve the cognitively processed insights over time; the cognitive inference and learning system comprising a first interface, the first interface providing the data from the plurality of data sources to the cognitive interface and learning system, the first interface comprising a sourcing agent application program interface (API), the sourcing agent API being implemented to enable the sourcing agent to source a variety of multi-site, multi-structured source data streams, the multi-site, multi-structured source data streams being dynamically ingested via the sourcing agent API in real time, the sourcing agent comprising a sourcing agent API connectors agent, the sourcing agent API connectors agent being implemented to manage interactions with APIs that are external to the cognitive platform; and, the cognitive inference and learning system comprising a second interface, the second interface providing the cognitively processed insights to the destination as a stream of visualized insights, the second interface comprising a destination agent application program interface (API), the destination agent application program interface being implemented to enable a destination agent to publish the cognitively processed insights to a consumer of cognitive insight data, the destination agent comprising a destination agent API connectors agent, the destination agent API connectors agent being implemented to manage interactions with APIs that are external to the cognitive platform, the destination comprising a cognitive application, the cognitive application enabling a user to interact with the cognitively processed insights, interaction with the cognitive insights being in the form of a response or a query, the response or query being provided to the cognitive inference and learning system via the destination agent API.