Elon Musk insists that the $44 billion deal for Twitter cannot continue -- or the price should be lowered -- unless Twitter proves claims that fake users are less than 5% of all accounts. After Musk temporarily put the deal to buy Twitter on hold on Friday over Twitter's claim that fewer than 5% of its accounts on the service are fake, relations between the different parties haven't improved over the following days. On Monday, Twitter CEO Parag Agrawal tweeted a thread about Twitter spam, seemingly in response to Musk's assurance that the 5% figure was realistically closer to 20%. In the thread, Agrawal explained about the complexities of catching spam and reviewing it, as well as an assertion that Twitter's "actual internal estimates for the last four quarters were all well under 5%," using internal data. Agrawal then disputes the ability for Musk or his team to determine how much spam there is on the service. "Unfortunately, we don't believe that this specific estimation can be performed externally, given the critical need to use both public and private information (which we can't share,)" writes the CEO. An independent study claims that fake users as a percentage of all users could be nearly 20%. Political accounts, including Musk's own have been said to exceed 40%. He adds that Twitter "shared an overview of the estimation process with Elon a week ago," and looked forward to "continuing the conversation with him." 20% fake/spam accounts, while 4 times what Twitter claims, could be *much* higher.My offer was based on Twitter's SEC filings being accurate.Yesterday, Twitter's CEO publicly refused to show proof of