What alternative tool do the podcasters suggest may not be a bad idea for testing ads, given A/B testing’s limitations?

Which real-world example did the podcasters discuss to show the confounding effects of A/B tests?

What is the main issue with “divergent delivery” in A/B testing, according to article discussed by Elena in the “Marketing Architects” podcast?

Please watch the following video on Duolingo and its use of A/B testing.   As the video described, Duolingo conducts hundreds of A/B tests weekly to refine its user experience, from interface tweaks to feature introductions. While this data-driven approach has led to improvements like increased user retention and engagement, it also raises questions about user autonomy and consent. 1. According to the information presented in the video, what are the benefits of A/B testing for Duolingo? 2. Should users be made aware when they are part of an experiment, and if so, how transparent should companies be about their testing practices? Please use specific examples in your response. 

During a routine office visit, a patient takes off his shoes and shows the nurse  1cthis awful sore that won’t heal. 1d On inspection, the nurse notes a 3-cm round ulcer on the left great toe, with a pale ischemic base, well-defined edges, and no drainage. Based on these findings, what does the nurse suspect?

During an assessment of a 20-year-old man, the nurse finds a small palpable lesion with a tuft of hair located directly over the coccyx. What does this finding indicate?

During an assessment of a 20-year-old patient with a 3-day history of nausea and vomiting, the nurse notices dry mucosa and deep vertical fissures in the tongue. What do these findings indicate?

The nurse notices that a patient’s submental lymph nodes are enlarged. In an effort to identify the cause of the node enlargement, what should the nurse assess?

While palpating the prostate gland through the rectum, which finding would the nurse recognize as abnormal?

During an examination, the patient states he is hearing a buzzing sound and says that it is  1cdriving me crazy! 1d What does this indicate?