inspired by NLP success and it's just recently it's been tested since like the dawn of alex net but it is definitely gaining traction and so an NLP this is about predicting words from their context so when the sentence predict words from their context words and form would be labelled as positive words and predict one and then tiger an ocean don't appear in the context so they've been labeled as zero or negative so the sole supervised learning has these pretext tasks and so there's other techniques other than context like NLP