AI personal assistants have been spotted in movies and other pop culture. Now tech giants are trying to bring those to your phones. Ben Wood, chief analyst at CCS Insights, talks to CNBC's Tom Chitty and Arjun Kharpal about his firm's annual predictions report and why he thinks that we could have an AI model trained on our own personal data by 2025.

00:00 - Introduction
00:30 - Welcome
01:45 - How to make tech predictions
03:21 - Stat of the week
04:06 - The thesis behind the prediction
07:48 - How would it work?
09:21 - Why Apple?
11:32 - How other companies could compete
13:31 - Will people want it?
15:15 - The impact of software fragmentation
17:40 - How will this work across devices?
19:32 - The intersection with health
22:10 - Apple and personal health
24:34 - Other predictions
26:40 - How past predictions have fared
32:40 - Stat of the week reveal