Expedia survives by research, and Technology to read hidden emotions.

Attached are two articles in one document. Write thoughtful responses to the question about any one of the articles:

1.  Expedia article: How did Expedia stay relevant or survive? What did their Usability Lab do? Describe A/B testing in simple words. 150-200 words.

2. Hidden Emotion article: summarize the techniques mentioned in this article. What are some limitaions of using them for decision making? 150-200 words.