My guess was that Valdes is hypercorrecting the plural of ‘thesis’, ‘theses’, as a typo for ‘these’, with some additional error like omitting an additional word such as ‘of’ (for ‘I have two of these’). ‘Theses’ is admittedly a fairly unusual word outside academia which sure looks like a typo. It is a word I would avoid outside of an academic context where the pluralization is clear like ‘PhD theses’, because it looks so much like a typo, and indeed, checking Gwern.net, I spot one typo of it which wasn’t caught by spellcheck...
I do not see a typo there. How do you think it should have been written?
My guess was that Valdes is hypercorrecting the plural of ‘thesis’, ‘theses’, as a typo for ‘these’, with some additional error like omitting an additional word such as ‘of’ (for ‘I have two of these’). ‘Theses’ is admittedly a fairly unusual word outside academia which sure looks like a typo. It is a word I would avoid outside of an academic context where the pluralization is clear like ‘PhD theses’, because it looks so much like a typo, and indeed, checking Gwern.net, I spot one typo of it which wasn’t caught by spellcheck...